Asked by Sam

If the density of a gas is 1.2g/L at 745.torr and 20 Celsius, what is the molecular mass?
Answered by DrBob222
If you take the ideal gas law of PV = nRT and modify it to
P*molar mass = density*RT
(745/760)*M = 1.2*0.08206*293
Solve for M = molar mass.
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