Similar to copper, calcium also reacts with the oxygen in the air when heated to form calcium oxide. Given the experimental
data in the table, what is the empirical formula of calcium oxide? The molar mass of calcium is 40.08 g/mol and the molar mass
of oxygen is 16.00 g/mol.
Mass of empty crucible
Mass of crucible with calcium before reaction
Mass of crucible and contents after heating
empirical formula:
64.000 g
69.555 g
71.772 g