Answer to Question #90965 in General Chemistry for Maanjog

Question

How many grams are present in 5.6 litres of CO2(carbon dioxide) at STP?

Answer 1

Solution: At STP 1 mol of any gas has a volume of 22.4 liters, so in 5,6 liters of CO2 there are 5.6/22.4=0.25 moles. 1 mol of CO2 has a mass of (12+16*2)=44 g, so in 0.25 moles there are 44*0.25=11 g.

Answer: 11 grams.