Molar volume is when 1 mol of any gas occupies 22.4 L at STP. Methyl ether has a mass of 8.12 g, Volume occupied - 3.96 L If 22.4 L occupied by 1 mol of gas Then 3.96 L occupied by 1/22.4 x 3.96 = 0.176 mol of gas The mass of 0.176 mol = 8.12 g Molar mass is mass of 1 mol Therefore mass of 1 mol = 8.12/0.176 = 46.1 Molecular weight is 46.1 g/mol
