Please verify if the answers below are correct:
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a) What equation can be used to calculate the molar mass of a gas using P,V,R,T and m?
--> PV=nRT
PV=(mass(m)/molar mass(M))RT
M=m*RT/PV

b) what equation can be used to calculate the molar mass of the gas using density?
PV=nRT
PV=(mass(m)/molar mass(M))RT
PV=(m/M)RT
PM=mRT/V
PM=(m/V)RT
PM=dRT
M=dRT/P

Quote from: prasamb@yahoo.com on December 10, 2022, 11:20:23 PM
Please verify if the answers below are correct:
==================================
a) What equation can be used to calculate the molar mass of a gas using P,V,R,T and m?
--> PV=nRT
PV=(mass(m)/molar mass(M))RT
M=m*RT/PV

Equation for ideal gas law
PV=nRT
n= mass /molar mass
If you plug in this equation in ideal gas law equation and rearrange it
Molar mass (M.M) = mass RT /PV
Your equation is right.
Same equation can be written as
PM = dRT
d is the density = mass/ volume .

Quote from: prasamb@yahoo.com on December 10, 2022, 11:20:23 PM
Please verify if the answers below are correct:
==================================


b) what equation can be used to calculate the molar mass of the gas using density?
PV=nRT
PV=(mass(m)/molar mass(M))RT
PV=(m/M)RT
PM=mRT/V
PM=(m/V)RT
PM=dRT
M=dRT/P

Above equation is correct.