Answer:
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%
