Answer: a)
b)
Explanation:
The reaction is :
Rate = Rate of disappearance of = Rate of appearance of
Rate = =
Rate of disappearance of = =
a) Rate of disappearance of =
Rate of appearance of =
b) Rate of appearance of =
Answer : The number of plates and plate height is, plates and respectively.
Explanation : Given,
Retention time = 407 s
Width of a base = 13.0 s
Length = 12.2 m
First we have to calculate the number of plates.
Formula used :
where,
N = number of plates
= retention time
w = width of a base
Now put all the given values in the above formula, we get:
plates
Now we have to calculate the plate height.
Formula used :
where,
H = height of plate
L = length
N = number of plates
Now put all the given values in the above formula, we get:
Thus, the number of plates and plate height is, plates and respectively.
Answer:
polymerization
Explanation:
Student is explaining the process of formation of a polymer and the process is called polymerization.
Polymer is made up of joining repeating units. The repeating units are called monomers.
Properties of the polymer is determined by the structure of monomer molecule.
For example, consider a well-known polymer Teflon.is made by the polymerization of tetrafluoroethane.
Thus, the student is explaining polymerization.
The sequence given above are sequential steps which usually take place in THE FOUR STROKE ENGINE CYCLE. The correct option is A. The four stroke cycle engine is an internal combustion engine which used four piston stroke to complete one operation cycle. The first step, which is intake stroke takes air and fuel into the combustion chamber. The second step, which is the compression stroke compresses the mixture into a smaller volume. In the third step [ expansion stroke], the fuel is ignited by the spark and in the fourth step [exhaust stroke], left over gases are pushed out through the exhaust pipe.
The intermolecular forces that are responsible for the dissolution of Ethylene glycol in water is hydrogen bonding dipole-dipole forces and dispersion forces.
Both ethylene glycol and water contains the pair of hydrogen and oxygen.
The hydrogen of one atom create a bond with the oxygen of other atom this results in the formation of intra molecular hydrogen bonding.
The electron are non uniformly distributed over the molecule or the atom which results in the fluctuation of the electron density in the atom.
So it creates are dispersion forces which is present all over the molecule this forces helps to increase the strength of the bond formed between the ethylene glycol and water because they have large masses.
Both ethylene glycol and water are polar molecules because of being polar they form dipole and the dipole of both the molecules interact with each other in order to form bond between the atoms which eventually results in the formation dissolution of ethylene glycol in water.
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Compete Question - which intermolecular forces are responsible for the dissolution of ethylene glycol? select all that apply hydrogen bonding, dipole-dipole, dispersion and Ion dipole interaction.