Isomers have identical formulas and different
2 answers:
Answer: Different Molecular Structures
Explanation: Isomers are the substances which have same molecular formula but different structures.
These compounds also have different physical and chemical properties.
For eg - CH3CH2OH and CH3OCH3 these both are isomers . They have different identical formula and different structure.
CH3CH2OH is ethyl alcohol and CH3OCH3 is dimethyl ether which is least polar and the former one is highly polar thus used as polar protic solvents in the nucleophillic substitution reaction.
This can be easily distinguished with the structures provided.
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We know the formula of the density:
ρ =
;
So the mass will be equal to:
m = ρ * V = 2.70 * 21.3 = 57,51 g = 57510 mg of substance.
So the answer is 57510.
ρ =
So the mass will be equal to:
m = ρ * V = 2.70 * 21.3 = 57,51 g = 57510 mg of substance.
So the answer is 57510.
Answer:
Compound B has greater molar mass.
Explanation:
The depression in freezing point is given by ;
..[1]
Where:
i = van't Hoff factor
= Molal depression constant
m = molality of the solution
According to question , solution with 5.00 g of A in 100.0 grams of water froze at at lower temperature than solution with 5.00 g of B in 100.0 grams of water.
The depression in freezing point of solution with A solute:
Molar mass of A =
The depression in freezing point of solution with B solute:
Molar mass of B =
As we can see in [1] , that depression in freezing point is inversely related to molar mass of the solute.
This means compound B has greater molar mass than compound A,