A sample of gas has a mass of 0.555 g. Its volume is 117 mL at a temperature of 85 degrees C and a pressure of 753 mmHg. What is the molar mass of the gas?

1 Answer
Nov 18, 2017

We solve the Ideal Gas equation......and we know that 1atm will support a column of mercury that is 760mm high.....

i.e. 1atm760mmHg

Explanation:

n=PVRT=MassMolar mass

And thus Molar mass=RTPV×mass

0.0821LatmKmol×358.1K×0.555g753mmHg760mmHgatm1×0.117L=??gmol1....