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Gas calculation

Can you help me solving this question? How do I find the mass?CDE724A0-721B-424A-B579-8362EAC551A8.jpg.jpeg
Original post by popangel
Can you help me solving this question? How do I find the mass?CDE724A0-721B-424A-B579-8362EAC551A8.jpg.jpeg

It asks for relative molecular mass so assume ideal behavior and just use PM=dRT
where P=pressure, M=molecular mass, d=density, R=ideal gas constant, T=absolute temperature

It can be derived from the ideal gas equation easily,
PV=nRT
PV=(m/M)RT
PM=(m/V)RT
m/V = density so
PM=dRT

hope this helps
Reply 2
Original post by eaglespirit
It asks for relative molecular mass so assume ideal behavior and just use PM=dRT
where P=pressure, M=molecular mass, d=density, R=ideal gas constant, T=absolute temperature

It can be derived from the ideal gas equation easily,
PV=nRT
PV=(m/M)RT
PM=(m/V)RT
m/V = density so
PM=dRT

hope this helps

Thank you very much ! :smile:

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