Using the chemical reaction equation 2Cu + O2 = 2CuO, calculate the mass of copper reacted with 8 g of oxygen.

Metallic copper reacts with oxygen to form oxide. The reaction is described by the following chemical equation:

Cu + ½ O2 = CuO ↑;

Let’s calculate the chemical amount of oxygen. For this purpose, we divide the mass of the available substance by the weight of 1 mole.

M O2 = 16 x 2 = 32 grams / mol;

N O2 = 8/32 = 0.25 mol;

With this amount of oxygen, twice the amount of copper oxide will be synthesized. The reaction will enter 0.25 x 2 = 0.5 mol of copper.

Determine the weight of the copper. To do this, multiply the amount of the substance by the weight of 1 mole of the substance.

M Cu = 64 grams / mol;

m Cu = 64 x 0.5 = 32 grams;