What are the empirical formula and empirical formula mass for each of the following compounds?

Part $1$ of $4$

$C_5{H}_{10}.$ Round your answer to the nearest hundredths place.

Empirical formula:

Empirical formula mass: $,\frac{g}{\text{m}\text{o}\text{l}}$

Part $2$ of $4$

$C_{10}{H}_{30}{O}_{10}.$ Round your answer to the nearest hundredths place.