What mass of calcium oxide will be obtained if 3 moles of oxygen enter into a reaction with calcium?

Calcium enters into an oxidation reaction with oxygen. This reaction is described by the following equation:

Ca + ½ O2 = CaO;

When the reaction proceeds, one oxygen atom is attached to the calcium atom. In this case, one molecule of calcium oxide is synthesized.

N O2 = 3 mol;

In this reaction, 2 times more calcium will react with oxygen and, accordingly, 2 times more calcium oxide will be synthesized.

Let’s calculate its mass.

N CaO = 3 x 2 = 6 mol; M CaO = 40 +16 = 56 grams / mol; m CaO = 6 x 56 = 336 grams;