12 g of Ca (calcium) reacts with oxygen. Find the amount of CaO.
| June 11, 2021 | education
2Ca + O2 = 2Cao – reaction;
M (Ca) = 40 grams / mol is the molecular weight of calcium;
m (Ca) = 12 grams is the mass of calcium;
M (CaO) = 56 grams / mol is the molecular weight of calcium oxide;
m (CaO) = 12 grams * 56 grams / mol / 40 grams / mol = 16.8 grams is the mass of calcium oxide;
n (Cao) = m (CaO) / M (CaO) = 16.8 grams / 56 grams / mol = 0.3 mol is the chemical amount of calcium oxide;
Answer: 0.3 mol.
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