How many kilograms of chlorine are in 52 kg of the following chlorofluorocarbon (CFC)? C2F3Cl3

Question

How many kilograms of chlorine are in 52 kg of the following chlorofluorocarbon (CFC)?

C₂F₃Cl₃

Answer 1

molar mass C₂F₃Cl₃ = 84 g /mol

moles C2F3Cl3 = 52 kg x 1000 g /kg x 1 mol /84 g = 619 moles

moles Cl = 619 moles C2F3Cl3 x 3 mol Cl/ mol = 1857 moles Cl

kg Cl = 1857 moles Cl x 35 g Cl/mol x 1 kg/1000 g = 65 kg Cl