Answered

a 1.5L container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.C what is the molar mass of the unknown gas



Answer :

PV=nRT=(m/Mr)*RT <=> Mr=mRT/PV
In which you know everything, so solve it. Remember to convert your mass from grams to kilo and temperature to Kelvin, which means T=273+θ=273+50<=> T=323K
I won't do the math for you... Use a calculator.