CHAPTER 7.3 · SIMULATION

One Mole at STP

How to use: Choose a gas. Read its volume, molar mass and density. Press Add to table to build your data table.

Sample data: one mole of each gas at STP (0 °C and 1 atm). Two-decimal atomic masses. Density = molar mass ÷ 22.4 L/mol. Particles are a picture; one mole is really 6.02 × 10²³ particles.

Choose a gas

Volume of 1.00 mol at STP

22.4 L

Molar mass

g/mol

Density, M ÷ 22.4 L/mol

g/L

Floats in air (1.29 g/L)?

Data table

Gas	M (g/mol)	V (L)	d (g/L)