Chemistry Practice Problems Mole Concept Practice Problems Solution: How many moles (or molecules or formula units) are...

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Solution: How many moles (or molecules or formula units) are in each sample? a. 20.0 g NO2b. 1.35 kg CO2c. 40.4 g KNO3d. 102.3 kg Na2SO4

Problem

How many moles (or molecules or formula units) are in each sample? 

a. 20.0 g NO2


b. 1.35 kg CO2


c. 40.4 g KNO3


d. 102.3 kg Na2SO4