chemistry
posted by Jess .
An experiment shows that a 111ml gas sample has a mass of 0.161g at a pressure of 725mmHG and a temperature of 36degrees C.What is the molar mass of the gas?

Use PV = nRT and solve for n = number of mols of gas. Then n = grams/molar mass. You have n and grams, solve for molar mass. Remember T must be in kelvin.