A calcium sample weighting 607.4 mg was precipitated as oxalate and calcined calcium carbonate giving 246.7 mg. What the percentage of calcium in the sample?
Calcium molecular weight: 40.078 g/mol
CaCO3 molecular weight: 100 g/mol
Calcium molecular weight: 40.078 g/mol
CaCO3 molecular weight: 100 g/mol