# What is the volume in liters that contains 50.32 g of C2H6 (ethane) gas?

Oct 9, 2014

In order to calculate the volume in liters that contains $\text{50.32g}$ of ethane gas, you must first identify the molar volume of a gas, and the molar mass of ethane. Then you will use dimensional analysis to

Known/Given:
molar volume of any gas = $\text{22.414L/mol}$ at STP.
molar mass of ethane = $\text{C"_"2""H"_6}$, = $\text{30.07g/mol}$:
"[$\text{("2}$ x "12.011g/mol") + ("6" x "1.008g/mol")$\text{]}$

Solution:
$\text{50.32g}$ $\text{C"_"2""H"_6}$ x $\text{22.414L"/"1mol}$ x $\text{1 mol"/"30.07g}$ = $\text{37.51}$L

At STP, the volume in liters occupied by $\text{50.32g}$ ethane gas is $\text{37.51L}$.