A sample of carbon dioxide gas collected at STP occupies a volume of 32.0 L. How manny moles of gas does this sample contain?

Answer 1

At STP (standard temperature and pressure) 1 mole of any idea gas has a volume of 22.4 liters.

32.0 L x 1 mole/22.4 L = 1.43 moles (assuming CO₂ acts as an ideal gas)