Question

1. What are the oxygen moles in 0.5 mol of CaCO,?
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Answer 1

Answer:

Moles of oxygen in 0.5 mol of CaCO3 is 1.5 mole. 1 mole of CaCO3 gives 1 mole of CaO and 1 mole of oxygen. Any substance has molecular mass in 1 mole so mass of 1 mole CaCO3 is 100 gram.

Explanation:

Contribution of oxygen in CaCO3 is 316 = 48 grams.

Answer 2

The answer is 1.5 mol

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