Question

What volume would 5.5 g of CO2 occupy at STP​

Answer 1

 asked • 05/23/19What is the volume (in centiliters) of a sample of CO2 that masses 5.5

First convert g of CO2 to moles of CO2

5.5 x 10-4 g CO2 x (1 mol CO2 / 44.01 g CO2) = 1.2 x 10-5 mol CO2

At STP, 1 mole of a gas occupies a volume of 22.4 L. Setup a proportion to calculate the volume in Liters.

1 mol = 22.4 L

1.2 x 10-5 mol = ? L

? = (22.4 L x 1.2 x 10-5) / 1 mol = 2.7 x 10-4 L

1 L = 100 cL

2.7 x 10-4 L x (100 cL / 1 L) = 2.7 x 10-2 cL