Calculate the Mass percentage of different elements present in CaCO3

Calcium=40.0%

Carbon = 12.0%

Oxygen = 48.0%

Explanation:

The mass per mole of calcium is approximately 100.09g/mole.

calcium has an atomic mass of 40.08

carbon has an atomic mass of 12.01

Oxygen has a mass of 15.999

Thereof the 100.09g of calcium carbonate, calcium contributes 40.08g, carbon 12 and oxygen 16*3=48

Thus the percentages are calculated as follows.

Calcium (40.08/100.09) * 100%=40.0%

Carbon (12.01/100.09) * 100%=12.0%

oxygen (15.999/100.09) * 100%=48.0%