It is found that 250. mL of gas at STP has a mass of 1.00 g. What is the molar mass?

Question

Quizplus · Accepted Answer

At STP, 1 mole of any gas occupies a volume of 22.4 L and has a mass of its molar mass in grams. Since we have 0.004 moles (250 mL is 0.25 L), the molar mass can be calculated as follows:

Molar mass (in g/mol) = Mass (in g) / Number of moles
Molar mass = 1.00 g / 0.004 mol
Molar mass = 250 g/mol

The only option close to this value is B) 89.6 g/mol.

It Is Found That 250