Answer: The molar mass of this gas is 221 g/mol
Explanation:
The relation between density and molar mass is :
[tex]PM=dRT[/tex]
where P = pressure of gas = 1 atm (at STP)
M = molar mass of gas = 32 g/mol
d = density of gas = ?
R = gas constant = [tex]0.0821Latm/Kmol[/tex]
T= temperature of gas = 273 K ( at STP)
[tex]1atm\times M=9.88g/L\times 0.0821Latm/Kmol\times 273K[/tex]
[tex]M=221g/mol[/tex]
Thus the molar mass of this gas is 221 g/mol
