PLEASE HELP!!!
A 19.4 gram sample of gas is found to have a volume of 1.3 liters at 282 K and 1.2 atm. What is the molar mass of this gas? Show all of the work used to solve this problem.

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Use PV=nRT

here T=282
V=1.82
P=1.2
R=0.0821
and n=m/M we need M, so put m=19.4 to get M

It should look1.2*1.82=(19.4/M)*0.0821*282

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