Trimethylamine Is A Pyramidal Molecule. What Is The
Hybridization At Nitrogen?
Answer :
The
nitrogen is bonded to three CH3 groups and has a lone pair, so the
hybridisation is sp3.
How Many Stereoisomers Of Phenylpropylene Oxide Are
There?
Answer :
Two
positional isomer A and B & two Stereoisomer of each so, total 4 isomers.
Which One Of The Following Is Not Aromatic?
1)cyclotetrane 2)benzene 3)napthalene 4)anthracene ?
Answer :
cyclotetrane,
because of the double bonds are not conjugation
Number Of Sigma Bonds Present In Benzene Are Same As ..?
Answer :
Number
of Sigma bonds present in Benzene are same as Borazine (inorganic Benzene).
no.
of sigma bonds in Benzene= 12 (C6H6)
no. of sigma bonds in Borazine= 12 (B3N3H6)
no. of sigma bonds in Borazine= 12 (B3N3H6)
The Name Benzene Was Proposed By?
Answer :
Kekule
Which Is Useful In The Manufacture Of Insectisides?
Answer :
Rotenone,
Azadirachtin are natural insecticides, synthetic routes are deveoped recently.
DDT,
Gammaxene were used but were scraped out as they pose health hazards and are
insects are able sustain the max. dosages every year. Generally,
Semio-chemicals, a class of compounds found in insects themselves are being
studied and used as effective insecticides and warfare agents.
What Are The 4 Classes Of Unsaturated Fatty Acids?
Answer :
o Monounsaturated fat: This is a type of fat
found in a variety of foods and oils.
o Polyunsaturated fat: This is a type of fat
found in plant-based foods and oils.They can be divided into two groups known
as omega-3 fats and omega-6 fats.
o Omega-3 fatty acids: One type of
polyunsaturated fat made up of mainly omega-3 fatty acids and may be beneficial
to heart.
o Omega-6 fats decrease risk of heart disease
when they are consumed in place of saturated and trans fats.
What Is The Difference Between Coordinate Covalent Bond
And Covalent Bond?
Answer :
IN
coordinate covalent bond electrons which are shared by both the atoms are
comtributed by only one atom . This is otherwise known as dative bond.
In
covalent bond the electrons shared by both the atoms are contributed by both
the atoms equally.
What Happens When Aminoacids React With Alcohols?
Answer :
when
alcohols reats with aminoacids esters are formed. The esters are volatile in
contrast to free aminoacids.
R-CH-COOH
+ H2O-C2H5 -> R-CH-COO-C2H5 + H2O
NH2 NH2
NH2 NH2
What Are Ligases?which Type Of Reactions They Will
Catalyse?
Answer :
Ligases
are the group of enzymes that catalyse the transfer of a group from one kind of
molecule to another. These are also called transferases.
Nh2-ch2-cooh Belongs To What Structure?
Answer :
its
the structure of amino acid glacine
Mention The Factors Affecting Solubility Of Compounds?
Answer :
temperature,
pH, structure of compound i.e., whether the compd is straight chain or branched
& molecular weight of compd.
What Are Geometrical Isomerism? Explain Them With An
Example?
Answer :
Geometrical
isomerism is an example of stereo-isomerism.
This
occurs when substances have the same molecular formula, but a different
arrangment of their atoms in space. There are three ways that this can
happen:
where
there is a C=C bond in the molecule;
where a molecule has rings; or
where there is a >C=N bond.
where a molecule has rings; or
where there is a >C=N bond.
How 'salting Out' Process Is Used In Extraction?
Answer :
Proteins
are precipitated from aqueous solution by high concentrations of neutral salts.
This is the"salting -out" process.
Divalent
and trivalent ions are more effective than univalent ions.
The
salts commonly used for this purpose are NA2SO4,(NH4) 2SO4 Magnesium salts, and
phosphates.
What Is Saponification Of Oils?
Answer :
When
fats are hydrolysed with alkhali,the free fatty acids react with alkali to form
metallic acids.these salts are soaps and this process is called saponification.
What Is Redox Potential Of An Organic Compound?
Answer :
The
quantitative measure of the affinity of a compound to lose or gain electrons is
the redox potential.
What Is Lithipone?
Answer :
Lithipone
is a white pigment.it is amixture of BaSO4&ZnS.
What Is Difference Between Anti-aromatic And Non-aromatic
Compounds?
Answer :
Anti
aromatic compounds follows 4npi electron rule and are cyclic compounds, planar,
where as non aromatic are non planar or planar, cyclic or acyclic.
What Is The Range Of Uv & Vis Lamp In
Spectrophotometer?
Answer :
o uv lamp range is 200 nm to 340 nm.
o vis lamp range is 320 nm to 1100 nm.
both
of lamp range is mfg instument company voice of record is enculd the data range
in lamp is 200 nm to 1200 nm.
If Benzene And Tolune Both Can Be Mixed... What Is The
Boiling Point For The Mixture And Its Density?
Answer :
If
benzene and toluene mixed the boiling point will be ~ 90oC. Density will not
change.
Benzoic Acid Is A Weaker Than Para Nitro Benzoic Acid?
Answer :
in
p-nitrobenzoic acid due to -I effect of nitro group hydrogen present in acia
become more elecronegative and easily remove as proton and act like strong
acid.
What Is The Difference Between Sulphated Ash And Roi?
Answer :
There
no difference between procedure, both are same. we generally term it as
sulphated ash test/roi.in indian pharmacoepia, called it as roi and in usp,
called it as sulphated ash tesh. both are used for the determination of content
of inorganic matter in an organic substance.
If Tis Below Reaction Does Happaen Means...,what Is The
End Product.......? Naphthal + Toluene(or)benzene?
Answer :
high
molecular weight easily we can seperate koH
What Is The Difference Between Pvc And Upvc Plastic?
Answer :
PVC-POLYVINYL
CHLORIDE AND uPVC IS THE Unplasticized polyvinyl chloride IT IS USED FOR
building industry as a low-maintenance material.
What Mean By Organic Chemistry?
Answer :
Organic
Chemistry is a branch of Science, which deals study about carbon compounds
except Carbon monoxide, Carbon di oxide and corbonates.
Which Organic Compound Is Used As A Fuel In Jet Air
Crafts? A. 100 Octane B. 90 Octane C. Kerosine Oil D. Diesel Oil
Answer :
Kerosine
oil
What Is The Difference Between An Ion And A Radical?
Answer :
An
ion is a specie that have no unpaired electron and is charged, either
positively or negatively i.e. may be a cation or an anion. It is formed due to
heterolysis of a molecule
e.g
HCl----> H+ + Cl-
A
radical is a neutral specie having atleast one unpaired electron and is formed
due to homolysis of a molecule
e.g H-H
-------> H* + H*
The
* shows an unpaired electron. Similarly CH3* is a radical.
How To Synthsis Toluene To Benzaldehyde?
Answer :
from
directly reaction of toluene to cromyl chloride (CrO2Cl2) at room temp. to form
benzaldehyde.
How To Make A 100ml Solution With Given 10gm Of Naoh?
Answer :
Take
100ml water and pore 10gr NaOH pellets sterr with gently boil. NaOH sol ready.
How We Can Differentiate Between Oxalic Acid And Tartaric
Acid?
Answer :
By
Fluorescein test ... where tartaric acid " used in baking powder and found
in many food products
oxalic
acid : harmful in contact with skin or eyes toxic .remove Ca ions From
blood and also block Kidneys Fluoresce in test depended on Light passes
& usually in UV light
Question: What is the chemical
formula of detergent?
Answer: The chemical formula for detergent
certainly is not "c3h8o5," as was suggested. ("c3h8o5" does
not even exist as a molecule.)
Rather, the chemical formula for "detergent" really depends on what you mean by the word. By itself the word does not connoted any specific formula (must/must not have this function group).
Commercial detergents are made up of many different chemical compounds (different surfactants, colorants, pH modifiers, chlorinated and non-chlorinated whiteners, etc). For example, one effective (albeit harsh) surfactant is sodium lauryl sulfate (aka sodium dodecyl sulfate): C12H25NaO4S
Rather, the chemical formula for "detergent" really depends on what you mean by the word. By itself the word does not connoted any specific formula (must/must not have this function group).
Commercial detergents are made up of many different chemical compounds (different surfactants, colorants, pH modifiers, chlorinated and non-chlorinated whiteners, etc). For example, one effective (albeit harsh) surfactant is sodium lauryl sulfate (aka sodium dodecyl sulfate): C12H25NaO4S
Question: what is organic chemistry
Answer: chemistry deals with organic
molecules,and their physical and chemical properties chemistry deals with organic molecules,and their physical and
chemical properties Source:
Question: What is the net charge of
a non-ionized atom?
Answer: In an atom, the number of protons is
equal to the number of electrons and that one proton has the same positive
charge value as an electron does a negative charge value.
Therefore, I am assuming that all atoms have no charge, zero, none, squat.
Non-ionized also means the atom has not suffered electron exchange, so a non-ionized atom is really just an atom (which is word redundancy).
This is what I know from AS level Chemistry, so I don't know if it's the same thing as more advanced chemistry (for university or something).
Therefore, I am assuming that all atoms have no charge, zero, none, squat.
Non-ionized also means the atom has not suffered electron exchange, so a non-ionized atom is really just an atom (which is word redundancy).
This is what I know from AS level Chemistry, so I don't know if it's the same thing as more advanced chemistry (for university or something).
Question: What are KOH and HCl?
Answer: KOH is potassium hydroxide, which is a
strong base. HCl is hydrochloric acid, which is a strong acid.
Question: Why acetic has less
conductivity than Hcl?
Answer: Acetic acid has less conductivity,
because it ionizes less in solution. HCl separates almost completely in
solution to form the ions Cl- and H+. Acetic acid only partially ionizes into
CH3COO- and H+ with lots of it staying as complete CH3COOH molecules. It is the
concentration of ions in a solution, which determines its conductivity. An
electric current passes through the solution by movement of these ions. The extent
to which any partially ionized substance actually ionizes can be expressed as
its pKa value.
Question: What is a substituted
hydrocarbon?
Answer: A substituted hydrocarbon is a
hydrocarbon with one or more of the hydrogen is substituted with another
element, (often a halogen such as chlorine or bromine) or another group of
atoms such as -OH. Examples: -
a simple hydrocarbon is methane CH4. Substitute chlorine for hydrogen to get
CH3Cl Methyl Chloride is used for cleaning. Sub. Again to get
CH2Cl2 Methylene Chloride is used as paint stripper. Sub again to get
CHCl3 Chloroform is an ancient anesthetic. Sub again to get
CCl4 Carbon Tetrachloride is used in cleaning and fire extinguishers.
Substitute a single -OH group into -
CH4 to get CH3OH methanol or into C2H6 to get C2H5OH ethanol
The above examples all begin with unbranched non-cyclic hydrocarbons, but any hydrocarbon is a suitable target. A well-known instance is a double substitution of chlorine at opposite ends of a benzene ring to form paradichlorbenzene, commonly found hanging in toilet bowls. C6H6 becomes C6H4Cl2
a simple hydrocarbon is methane CH4. Substitute chlorine for hydrogen to get
CH3Cl Methyl Chloride is used for cleaning. Sub. Again to get
CH2Cl2 Methylene Chloride is used as paint stripper. Sub again to get
CHCl3 Chloroform is an ancient anesthetic. Sub again to get
CCl4 Carbon Tetrachloride is used in cleaning and fire extinguishers.
Substitute a single -OH group into -
CH4 to get CH3OH methanol or into C2H6 to get C2H5OH ethanol
The above examples all begin with unbranched non-cyclic hydrocarbons, but any hydrocarbon is a suitable target. A well-known instance is a double substitution of chlorine at opposite ends of a benzene ring to form paradichlorbenzene, commonly found hanging in toilet bowls. C6H6 becomes C6H4Cl2
Question: What is the difference
between the law of multiple proportions and the law of definite proportions?
Answer: Both laws have to do with relating to
Dalton's Atomic Theory. The only difference is that the Law of Definite
Proportions deals with elements combining to form ONE compound in a simple
whole number ratio. The Law of Multiple Proportions is comparing the same 2
elements that make up 2 different compounds the division of these 2 ratios
should equal a simple whole number ratio.
For example, Carbon and oxygen can combine to form carbon monoxide and carbon dioxide. If you calculated each compounds ration of oxygen to carbon, you would get the following ratios: compound A would equal a combining ratio of 1.34:1 (O:C). Compound B would equal a combining ratio of 2.67:1 (O:C).
If you divided the bigger ratio by the smaller ratio you would have that oxygen combines with a ratio of 2.67/1.34, which would equal 1.99:1, which is close enough to 2:1.
For example, Carbon and oxygen can combine to form carbon monoxide and carbon dioxide. If you calculated each compounds ration of oxygen to carbon, you would get the following ratios: compound A would equal a combining ratio of 1.34:1 (O:C). Compound B would equal a combining ratio of 2.67:1 (O:C).
If you divided the bigger ratio by the smaller ratio you would have that oxygen combines with a ratio of 2.67/1.34, which would equal 1.99:1, which is close enough to 2:1.
Question: Why chemists have not
created a periodic table of compounds?
Answer: One major reason I can think of, that
has not been addressed yet, is the periodicity of the elements. You can line
the elements up into neat functional groups--alkali metals, transition
elements, halogens and so on. This you could not do with compounds, even if you
had a separate table for hydrocarbons, one for elastomers, and one for
dyestuffs... Compounds also find wide use as smaller blocks of larger
compounds. We call these precursors. Take toluene. It is a very toxic compound,
but if you compound it into toluene diisocyanate, then compound that into
polyurethane, it becomes safe enough that you can build it into replacement hip
joints. Chemists do keep books of compounds, but a table on a big sheet of
paper the size of...oh, the entire side of a Wal-Mart store might be big
enough? It could never happen.
Question: How do you extract
ephedrine from a mineral block?
Answer: You cannot extract ephedrine or pseudo
ephedrine from a mineral block. Anyone who tells you that they have done it is
either mistaken or a liar.
Question: What are the
hydrocarbons?
Answer: Hydrocarbons are compounds made
entirely out of Hydrogen and Carbon
Question: What element was used to
make the first atomic bomb?
Answer: Uranium was used in the Hiroshima bomb
and Plutonium in the Nagasaki one.
Question: What is the full form of
hcl?
Answer: The full form of HCL is hydrochloric
acid or hydrogen chloride gas
Question: Are the chemical
properties of lithium a metal metalloid or a nonmetal?
Answer: Lithium, Li, is a metal. However, can
also be a metalloid or a nonmetal.
Question: Is benzene a polar
molecule?
Answer: No, Benzene is a non-polar compound
Question: Do all explosions produce
carbon dioxide?
Answer: An explosion is nothing more than the
rapid release of energy. This is most commonly due to the rapid combustion of a
material, although nuclear explosions do not involve combustion. The combustion
of any hydrocarbon or other carbon-containing substance ALWAYS produces carbon
dioxide. This might include explosion due to a natural gas or gasoline.
It is possible, however, to explode substances that do not contain carbon, such as pure hydrogen (the very famous Hindenburg disaster in 1937 is a classic example of a very big hydrogen gas explosion. An explosion of hydrogen produces only water vapor (H2O), NOT carbon dioxide (CO2).
Also, nuclear explosions (both fusion and fission) themselves do not produce carbon dioxide, although they may cause surrounding objects to incinerate, which would release carbon dioxide.
It is possible, however, to explode substances that do not contain carbon, such as pure hydrogen (the very famous Hindenburg disaster in 1937 is a classic example of a very big hydrogen gas explosion. An explosion of hydrogen produces only water vapor (H2O), NOT carbon dioxide (CO2).
Also, nuclear explosions (both fusion and fission) themselves do not produce carbon dioxide, although they may cause surrounding objects to incinerate, which would release carbon dioxide.
Question: Where is tin obtained?
Answer: Tin is obtained in various places tin
is found mainly in the ore cassiterite, which is found in Malaysia, Bolivia,
Thailand, and Nigeria.
Question: How do you solve Ideal
Gas Law problems?
Answer: The Ideal Gas Law is used to relate
the pressure, volume, temperature, and amount of an "ideal" gas.
Although many gases are not ideal in reality, you can usually use the Ideal Gas
Law anyway. Here is how you solve these problems!
The Ideal Gas Law is PV = nRT.
The Ideal Gas Law is PV = nRT.
Question: How many electrons are in
benzene?
Answer: There are 30 electrons in benzene.
This includes 24 carbon electrons and 6 hydrogen electrons. There are 12
electrons shared between C and H, and 18 between C and C. (6 electrons in up
ring, 6 in down ring and 6 between C and C).
Question: What is an oxidizing
agent?
Answer: Any chemical species that has a
tendency to accept electrons and thereby undergoing reduction themselves is
known as an oxidizing agent
Question: How can you tell if there
is a dipole moment or not?
Answer: A dipole moment is defined as a
measure of the molecular polarity of a compound; the magnitude of the partial
charges on the ends of a molecule times the distance between them (in meters).
In order for there to be a dipole moment, the element must have molecular polarity, which results from molecules with a net imbalance of charge (often a result of differences in electro negativity). If the molecule has more than two atoms, both shape and bond polarity determines the molecular polarity.
In general, look for a difference in electro negativity of the elements of a molecule which results in polarity and thus a possible dipole moment. Note that molecular shape influence polarity so molecules with the same elements but a different shape (and vice versa) will not have the same dipole moment.
In order for there to be a dipole moment, the element must have molecular polarity, which results from molecules with a net imbalance of charge (often a result of differences in electro negativity). If the molecule has more than two atoms, both shape and bond polarity determines the molecular polarity.
In general, look for a difference in electro negativity of the elements of a molecule which results in polarity and thus a possible dipole moment. Note that molecular shape influence polarity so molecules with the same elements but a different shape (and vice versa) will not have the same dipole moment.
Question: What is the direction of the dipole moment expected
for carbon tetrachloride?
Answer:
It has no net dipole moment. Hence, it is non-polar
Question: What are the cons of
eating organic foods?
Answer: It is more expensive and you have less
of a variety to choose. Stores like Wegamans have a variety of organic food
though.
Since organic produce does not contain chemicals and stabilizers, it spoils more quickly. It also may appear "uglier" (asymmetrical, not shiny or waxy, dirty).
Since organic produce does not contain chemicals and stabilizers, it spoils more quickly. It also may appear "uglier" (asymmetrical, not shiny or waxy, dirty).
Question: What wavelengths can the
human eye see?
Answer: Human eye is sensitive to an
approximate range of wavelength of radiations from 380nm to 760nm. This portion
of electromagnetic spectrum is identified as Light
Question: Explain the method for
the preparation of 1 normal solution of hydrochloric acid.
Answer: Dilute 85ml of HCL to 1000ml
Question: Is HCl an acid or a base?
Answer: HCl, or hydrochloric acid, as the name
implies, is an acid. In fact, it is considered a strong acid because it
dissociates completely in water to form H3O+ and Cl-.
However, it can also act as a base in reactions with acids stronger than it can like HClO4.
However, it can also act as a base in reactions with acids stronger than it can like HClO4.
Question: Where does arsenic come
from?
Answer: (FeAsS) Arsenopyrite also known as mispickel
is the most common mineral containing arsenic.
Question: how can determine the
'pka ' of a given component
Answer: pka or pkb depends on the compound
taken. when pH is measured and the concentration of compound is known, they can
be determine by simple related formulas under acids & bases section which
we learnt.
Other explanation may be measuring rate of ionization of acid or base with experimental setup and then calculating the negative logarithm of concentration of acidic or basic species.
Other explanation may be measuring rate of ionization of acid or base with experimental setup and then calculating the negative logarithm of concentration of acidic or basic species.
Question: How reactive is
Trimethylindium towards oxygen and water?
Answer: Trimethylindium is extremely reactive
towards oxygen and water. With low concentrations of oxygen (ppb to ppm to a
few %), it immediately forms dimethylindium methoxide (Me2InOMe) as the first
reaction product by insertion of O between In and C. With increased
concentrations of oxygen (several %, atmospheric air or pure oxygen), it burns
or explodes. Similar insertion reactions are expected with other elements of
Group 16 (such as S, Se and Te) with highly vigorous outburst at higher
concentrations of S, Se and Te.
Trimethylindium reacts readily and vigorously with water to form Me2InOH and Methane (CH4) gas if the concentration of H2O is very small (up to 1000's ppm). With high concentrations of water (% level), trimethylindium can burn and often explode leaving behind In (OH)3, In2O3 as the final products. Extremely violent reactions of trimethylindium are also known with oxidizers. Such as H2O2, KMnO4, HNO3, Bleach) and halogenated compounds (CCl4, CBrCl3, CBr2Cl2, CHCl3, C2Cl6, and halocarbon oils).
Trimethylindium reacts readily and vigorously with water to form Me2InOH and Methane (CH4) gas if the concentration of H2O is very small (up to 1000's ppm). With high concentrations of water (% level), trimethylindium can burn and often explode leaving behind In (OH)3, In2O3 as the final products. Extremely violent reactions of trimethylindium are also known with oxidizers. Such as H2O2, KMnO4, HNO3, Bleach) and halogenated compounds (CCl4, CBrCl3, CBr2Cl2, CHCl3, C2Cl6, and halocarbon oils).
Question: Which is polar HCl or HF?
Answer: This question is quite simple if you
have an electro negativity chart:
Florine's Electronegativity: 4.0
Chlorine's Electronegativity: 3.0
Hydrogen's Electronegativity: 2.1
HCl: 3.0-2.1= .9 (Slightly polar)
HF: 4.0-2.1= 1.9 (Much more polar)
Florine's Electronegativity: 4.0
Chlorine's Electronegativity: 3.0
Hydrogen's Electronegativity: 2.1
HCl: 3.0-2.1= .9 (Slightly polar)
HF: 4.0-2.1= 1.9 (Much more polar)
Question: What is a dipole moment?
Answer: Dipole moment is the measure polarity
of a polar covalent bond. It is defined as the product magnitude of charge on
the atoms and the distance between the two bonded atoms. Its common unit is
debye and SI unit is columb meter.
Question: How do you prepare a
solution of 1 M HCl?
Answer: Exactly how you prepare will depend on
what you are starting with. Typically, to make a 1 M HCl solution, you will be
starting with a stock solution of more concentrated HCl that you will then
dilute.
Question: What is some importance
of organic chemistry?
Answer: In organic chemistry one uses it both
medicinally one uses it to test for illness way back from ancient times. It is
also a good diagnostic tool by smell feel or touch. You can actually heed the
smell of decay in organic chemistry
Question: How many moles of HCl are
present in .70 L of a .33 M HCl solution?
Answer: ► First, remember definition of M
(moles), M = moles of species / L.
0.33 M = 0.33 moles HCl / L
► Then, multiple your volume by the molar concentration:
0.33 moles HCl / L x 0.70 L = 0.231 moles HCl
0.33 M = 0.33 moles HCl / L
► Then, multiple your volume by the molar concentration:
0.33 moles HCl / L x 0.70 L = 0.231 moles HCl
Question: What is the use of
glacial acetic acid?
Answer: There are no medical uses to pure GAA,
dilute concentrations can be used to remove warts or verucas; it can also be
used via iontophoresis to treat bone spurs. Industrial uses include photography
and the manufacturing of aspirin.
Question: What is the structure of
a DNA molecule?
Answer: A molecule of DNA is double-stranded.
The molecule has the shape of a double helix.
The DNA molecule consists of two complementary strands oriented in an anti-parallel fashion. Each strand is composed of nucleotides. A nucleotide consists of a base (a purine or pyrimidine), a sugar (between the other two components) named deoxyribose, and a phosphate group. Nucleotides are linked to each other via phosphodiester bonds, forming a sugar-phosphate backbone to each strand.
The base of each nucleotide projects into the interior cavity of the helix. Each base is opposite another base: adenine (a purine) is always paired with thymine (a pyrimidine), and guanine (purine) with cytosine (pyrimidine); this phenomenon is called complementary base pairing.
Each nucleotide forms hydrogen bonds with its complementary base on the other strand. Two hydrogen bonds form between adenine and thymine; three hydrogen bonds form between guanine and cytosine.
The DNA molecule consists of two complementary strands oriented in an anti-parallel fashion. Each strand is composed of nucleotides. A nucleotide consists of a base (a purine or pyrimidine), a sugar (between the other two components) named deoxyribose, and a phosphate group. Nucleotides are linked to each other via phosphodiester bonds, forming a sugar-phosphate backbone to each strand.
The base of each nucleotide projects into the interior cavity of the helix. Each base is opposite another base: adenine (a purine) is always paired with thymine (a pyrimidine), and guanine (purine) with cytosine (pyrimidine); this phenomenon is called complementary base pairing.
Each nucleotide forms hydrogen bonds with its complementary base on the other strand. Two hydrogen bonds form between adenine and thymine; three hydrogen bonds form between guanine and cytosine.
Question: What is the dipole moment
of chlorooctane?
Answer: There are multiple forms of the
molecule "chlorooctane." This is because the chlorine atom can be
attached to the octane chain in several different places, and each different
placement will result in a different dipole moment. If you specify the
structure of the compound more precisely (1-chlorooctane or 2-chlorooctane for
example), it is possible to determine its dipole moment.
Question: What is protein in
Chemistry?
Answer: Protein is a source of backup energy
that your body stores, a large complex molecule made up of one or more chains
of amino acids. Proteins perform a wide variety of activities in the cell.
Highly complex nitrogenous compounds found in all animal and vegetable tissues. Proteins, the principal constituents of the protoplasm of all cells (apart from water), are of high molecular weight, and consist essentially of combinations of amino acids in peptide linkages. Twenty different amino acids are commonly found in proteins and each protein has a unique, genetically defined amino acid sequence that determines its specific shape and function.
Highly complex nitrogenous compounds found in all animal and vegetable tissues. Proteins, the principal constituents of the protoplasm of all cells (apart from water), are of high molecular weight, and consist essentially of combinations of amino acids in peptide linkages. Twenty different amino acids are commonly found in proteins and each protein has a unique, genetically defined amino acid sequence that determines its specific shape and function.
Question: Is benzene an element or
a compound?
Answer: Benzene is a compound.
Question: What is the octet rule in
chemistry?
Answer: The octet rule is a simple chemical
rule of thumb that states that atoms tend to combine in such a way that they
each have eight electrons in their valence shells, giving them the same
electronic configuration as a noble gas. This 8-electron configuration is
especially stable because with 8 valence electrons, the s- and p-orbitals are
completely filled (with 2 in the s-orbital, and 6 in the p-orbitals). Having
completely filled orbitals provides increased stability due to something called
"exchange energy."
The rule is applicable to the main-group elements, especially carbon, nitrogen, oxygen, and the halogens, but also the metals in the first two columns of the periodic table (but not to the transition metals in the middle of the periodic table). Note that the elements hydrogen (H) and helium (He) do not follow the octet rule, but rather the "duet" rule (2 electrons) because they do not have any p-orbital electrons.
In simple terms, molecules or ions tend to be most stable when the outermost electron shells of their constituent atoms contain eight electrons. The rule is commonly used in drawing Lewis dot structures.
The rule is applicable to the main-group elements, especially carbon, nitrogen, oxygen, and the halogens, but also the metals in the first two columns of the periodic table (but not to the transition metals in the middle of the periodic table). Note that the elements hydrogen (H) and helium (He) do not follow the octet rule, but rather the "duet" rule (2 electrons) because they do not have any p-orbital electrons.
In simple terms, molecules or ions tend to be most stable when the outermost electron shells of their constituent atoms contain eight electrons. The rule is commonly used in drawing Lewis dot structures.
Question: How are dipole
attractions London dispersion forces and hydrogen bonding similar?
Answer: They are all forces of attraction used
to kelp keep molecules together. Since the molecules are the atoms bonded
together, there are no electrons, or not enough, left over to bond with more
atoms. The result would be trillions of tiny molecules floating about. Instead,
each of these types of attractions draws the molecules together into solids,
liquids, or gases.
Question: What is ciprofloxacin HCL
used for what type?
Answer: Ciprofloxacin is used to fight
bacterial infections. I am currently taking this medicine to help cure
mastoiditis.
Question: Can you show you the
organic structure of cetearyl alcohol and tell me what organic family it is?
Answer: Cetearyl alcohol is actually a mixture
of both stearyl alcohol and cetyl alcohol (refer to links below for
structures). Both of these compounds would be considered "fatty
alcohols" due to their long carbon chains. Fatty alcohols are in the
aliphatic hydrocarbon family. To draw the structure of "cetearyl
alcohol" you would actually have to draw the structure of cetyl alcohol
and the structure of stearyl alcohol.
Question: What is the chemical
formula for Epsom salts?
Answer: Epsom Salt chemical formula is
Me245-H2O.
Question: What is a medicine
dropper?
Answer: A medicine dropper is an instrument
used to measure small amount of liquids, usually in milligrams. You will first
pinch the handle before you submerge it in the water.
Question: What are 3 facts on
evaporation?
Answer: 1. 80% of evaporation comes from the
ocean.
2. 20% of evaporation comes from inland water.
3. Wind helps evaporation by moving it
2. 20% of evaporation comes from inland water.
3. Wind helps evaporation by moving it
Question: What is hydra?
Answer: Hydra is a type of polyp. It is an
animal, because it moves around like one even though it looks like a plant. A
hydra is from the Phylum Cnidarian and belongs with others such as jellyfish
and coral.
Question: How does spontaneous
combustion occur?
Answer: It is caused by a build up of sulfur
in a person's body that eventually reacts to increased body heat.
Question: Is DNA organic?
Answer: ► Of, relating to, or derived from
living organisms: organic matter.
► Of, relating to, or affecting a bodily organ: an organic disease.
In addition, DNA would chemically be considered organic since it contains carbon as the primary chemical backbone of the molecule.
► Of, relating to, or affecting a bodily organ: an organic disease.
In addition, DNA would chemically be considered organic since it contains carbon as the primary chemical backbone of the molecule.
Question: How do you separate the
colors of ink?
Answer: The colors of ink can be separated by
chromatography.
Question: How are dipole
attractions London dispersion forces and hydrogen bonding similar?
Answer: How are dipole attractions London
dispersion forces and hydrogen bonding similar?
Question: What is the IUPAC name of
benzene?
Answer: The IUPAC name for Benzene is Benzene.
It forms the basis for other IUPAC-named benzene derivatives like 1,
2-dimethylbenzene etc.
Question: What are the differences
between organic and inorganic chemistry?
Answer: Organic chemistry is the chemistry of
carbon compounds while inorganic chemistry is the chemistry of all the rest of
the elements on the periodic table.
Question: What is alum?
Answer: Alum is a chemical (aluminum potassium
sulphate); it tends to be whitish powder with several uses, including:
1. As an astringent
2. As an antibacterial
3. As a food preservative
4. As a 'Styptic pencil' to heal shaving cuts
5. To stem the flow of minor blood loss and cuts
6. Soaked into materials to make them flame retardant
There are other uses, but these are some of the more common ones.
1. As an astringent
2. As an antibacterial
3. As a food preservative
4. As a 'Styptic pencil' to heal shaving cuts
5. To stem the flow of minor blood loss and cuts
6. Soaked into materials to make them flame retardant
There are other uses, but these are some of the more common ones.
Question: What
is a tripod? How it is used?
Answer: A tripod is a general term for a
stand or support with three legs. It is often used to support a camera gun, or
to place above the Bunsen burner in the science lab to heat/boil anything.
In the science laboratory, metal gauze is placed on top of it to give support to the beaker (An iron ring clamp with a ring stand can often be used instead and an iron ring allows for easy height adjustment).
In the science laboratory, metal gauze is placed on top of it to give support to the beaker (An iron ring clamp with a ring stand can often be used instead and an iron ring allows for easy height adjustment).
Question: What is the equation for
photosynthesis?
Answer: 1) Light energy
2) == 6CO2 + 6H2O --------> C6H12O6 + 6O2 ==
3) Carbon dioxide + water +light energy------> carbohydrates+ oxygen
2) == 6CO2 + 6H2O --------> C6H12O6 + 6O2 ==
3) Carbon dioxide + water +light energy------> carbohydrates+ oxygen
Question: What makes a molecule
into an organic molecule?
Answer: Any molecule that contains one or more
atoms of Carbon is an organic molecule. All elements that are composed by
Carbon are studied by Organic Chemistry.
Question: What is the direction of
the dipole moment expected for hydrogen bromide?
Answer: The HBr molecule is linear (obviously,
since it contains only two atoms). The dipole moment is a vector, parallel to
the bond, pointing toward the partially positively charged atom, which is, in
this case, the hydrogen. The magnitude of the dipole moment is the difference
in the partial electrical charges on each atom times the spatial separation of
the atoms in the bond. In a molecule with more than two atoms (more than one
bond), the dipole moment of each bond must be added vectorially and the
resultant vector will determine the dipole moment of the molecule. For
instance, carbon dioxide has two carbon-oxygen double bonds of high polarity,
but because the molecule is linear, and the individual dipoles oppose each
other, the carbon dioxide molecule has no net dipole moment.
Question: What is the difference in the modern periodic table
and Mendeleevs table?
Answer:
The periodic table is now arranged in the order of increasing
atomic numbers. In addition, it is said that the modern table makes it easier
to read and learn. The way that it is set up now allows scientists to make
changes if necessary. Hope this helps Source
The key differences between Mendeleev and modern periodic
table
1. Mendeleev?s periodic table was based on the increasing atomic masses while the modern periodic table is based on the increasing atomic numbers.
2. Mendeleev?s periodic table had gaps for the missing elements at that time. Modern periodic table has no concept as such.
3. Mendeleev?s periodic table has 8 vertical columns called groups and 12 horizontal rows called periods.
Modern periodic table has 18 columns called groups and 7 rows called periods.
4. Mendeleev periodic table doesn?t support the fact of the existence of isotopes.
Modern periodic table supports this fact as the classification is based upon the atomic number, rather than the atomic weight of the element
1. Mendeleev?s periodic table was based on the increasing atomic masses while the modern periodic table is based on the increasing atomic numbers.
2. Mendeleev?s periodic table had gaps for the missing elements at that time. Modern periodic table has no concept as such.
3. Mendeleev?s periodic table has 8 vertical columns called groups and 12 horizontal rows called periods.
Modern periodic table has 18 columns called groups and 7 rows called periods.
4. Mendeleev periodic table doesn?t support the fact of the existence of isotopes.
Modern periodic table supports this fact as the classification is based upon the atomic number, rather than the atomic weight of the element
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