The molecular weight of a gas that has a density of 6.70 g/L at STP is ________ g/mol. A)4.96 × 10² B)1.50 × 10² C)7.30 × 10¹ D)3.35 E)2.98 × 10^-1

Question

Quizplus · Accepted Answer

At STP (standard temperature and pressure), 1 mole of any ideal gas occupies 22.4 L. The molecular weight (molar mass) can be calculated using the formula: Molecular weight = Density × Molar volume. Therefore, Molecular weight = 6.70 g/L × 22.4 L/mol = 150.08 g/mol, which is approximately 1.50 × 10^2 g/mol.

The Molecular Weight of a Gas That Has a Density