Calculate the mass and amount of calcium substance reacted with 32 g of oxygen.

Calcium is oxidized by oxygen. This reaction is described by the following chemical reaction equation:

Ca + ½ O2 = CaO;

During oxidation, one oxygen atom is attached to the calcium atom. In this case, one molecule of calcium oxide is synthesized.

Let’s determine the chemical amount of oxygen.

We divide the available weight of oxygen by the weight of 1 mole of this substance.

M O2 = 32 grams / mol; N O2 = 32/32 = 1 mol;

In this reaction with gaseous oxygen, 2 times more chemical amount of calcium will react.

Let’s find its mass.

N Ca = 1 x 2 = 2 mol; M Ca = 40 grams / mol; m Ca = 2 x 40 = 80 grams;