Question

1.Calculate the amount(in mol) in 8.80 g of carbon dioxide,Co2
2.Calculate the number of chlorine atoms in a 6.0 mg sample of anti-cancer drug cisplatin, cis-diamminedichloroplatinium(II),Pt(NH3)2Cl2

Answer 1

1. mols = grams/molar mass = ?

2. Convert 6.0 mg to grams. Then mols cisplatin = grams/molar mass = ?
# molecules cisplatin = mols x 6.02E23 = ?
# Cl atoms will be twice that since there are two Cl atoms/molecule of cisplatin.