Chemistry
Percentage of calcium in calcium carbonate (CaCO3) is
- 40
- 30
- 48
- 36
Stoichiometry
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Answer
40
Reason —
Molecular weight of CaCO3
= 40 + 12 + (16 x 3)
= 40 + 12 + 48
= 100 g
100 g of CaCO3 contains 40 g of calcium
Therefore, percentage of Ca = x 100 = 40%
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