Chapter 3.5, Problem 2CP

What are the empirical and molecular formulas of a hydrocarbon if combustion of 2.10 g of the compound yields 6.59 g ${\text{CO}}_{\text{2}}\text{ and 2}{\text{.70 g H}}_{\text{2}}\text{O}$ and its molar mass is about 70 g/mol?

$$ $\begin{array}{l}\text{a)}\hfill \\ {\text{CH, C}}_{\text{6}}{\text{H}}_{\text{6}}\hfill \\ \text{b)}\hfill \\ {\text{CH, C}}_{\text{5}}{\text{H}}_{\text{5}}\hfill \\ \text{c)}\hfill \\ {\text{CH}}_{\text{2}}{\text{, C}}_{\text{6}}{\text{H}}_{\text{12}}\hfill \\ \text{d)}\hfill \\ {\text{CH}}_{\text{2}}{\text{, C}}_{\text{5}}{\text{H}}_{\text{10}}\hfill \\ \text{e)}\hfill \\ {\text{CH}}_{\text{2}}{\text{, C}}_{\text{3}}{\text{H}}_{\text{6}}\hfill \end{array}$