Answer: Molar mass of gas is 238.6 g/mol
Explanation:
Using ideal gas equation:
PV = nRT
P= pressure = 1.75 atm
V= volume = 4.92 L
n = no of moles =[tex]\frac{\text {given mass}}{\text {Molar mass}}=\farc{81.5}{M}[/tex]
R= gas constant =0.0821 Latm\molK
T = temperature = 307 K
R= gas constant = 8.314 J/Kmol
T= temperature = 190.7 K
M= molecular mass of gas = ?g/mol
[tex]1.75\times 4.92=\frac{81.5}{M}\times 0.0821\times 307[/tex]
[tex]M=238.6g/mol[/tex]
