Calculate the mass of calcium oxide that is formed during the combustion of 10 g of calcium.

univerkov | September 10, 2021 | education

Given:
m (Ca) = 10 g

Find:
m (CaO) -?

Solution:
1) 2Ca + O2 => 2CaO;
2) n (Ca) = m (Ca) / M (Ca) = 10/40 = 0.25 mol;
3) n (CaO) = n (Ca) = 0.25 mol;
4) m (CaO) = n (CaO) * M (CaO) = 0.25 * 56 = 14 g.

Answer: The mass of CaO is 14 g.

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