Hi,

I have a question where I am given a sample of a mixture of gases (C2HF5 and C2H3F3) and was told to find the volume percentage of one gas.

Pressure = 0.449 atm

T= 288.15 K

Density= 1.79 g/L

I have also found the average molecular mass to be 94.266 amu.

So how can i approach this question to find the volume percentage of C2H3F3?

Do i use PV=nRT?

Thanks