Question

what is the ratio of empirical formula mass to molecular formula mass of benzene

Answer 1

Empirical formula of benzene is ( CH)n
empirical formula mass = 13
molecular formula mass of benzene = 78
Ratio = 13:78
= 1:6

Answer 2

Answer: 0.16

Explanation: Empirical formula is the formula which gives the simplest ratio of the atoms of the elements contained in the substance.

Molecular formula is the formula which gives the exact ratio of the atoms of the elements contained in the substance.

Molecular formula of benzene is $C_6H_6$

Empirical formula of benzene is $CH$

Molecular formula mass = 6(12)+6(1)= 78 g

Empirical formula mass= 1(12)+1(1)= 13 g

Thus $\frac{\text{Empirical formula mass}}{\text{Molecular formula mass}}=\frac{13}{78}=\frac{1}{6}$