Question

10.5 grams of Calcium carbonate (CaCO 3 ) produces 3.8 grams of Carbon dioxide (CO 2 ) and Calcium oxide (CaO). Calculate the mass of Calcium oxide formed in this chemical reaction.

Answer 1

Answer:

6.7 grams

Explanation:

By the law of conservation of mass, mass can neither be created nor destroyed.

Mass of CaCO 3 = Mass of CO 2 + Mass of CaO

10.5 = 3.8 + Mass of CaO

10.5 - 3.8 = Mass of CaO

6.7 grams = Mass of CaO

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