Answer to Question #111940 in General Chemistry for Liz

Question #111940

What is the molar mass of a .810 g sample of gas that occupies a volume of .600 L at a pressure of .777 atm and a temperature of 19.0 C? Answer in units of g/mol.

Expert's answer

M=m/n

n=PV/RT=(0.77*0.6)/(0.082*292)=0.462/23.944=0.019mol

M=0.810/0.019=43g/mol

Answer: m=43g/mol

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