Calculate the mass of copper oxide (2), which is required to obtain 3 mol of copper

Calculate the mass of copper oxide (2), which is required to obtain 3 mol of copper by the reaction CuO + H2 = Cu + H2O

1. Let’s find the amount of copper substance, for this we will make a proportion:

Hmol / 1 mol = 3 mol / 1 mol.

X = 3 mol / 1 mol = 3 mol;

n (CuO) = 3 mol.

2. Find the molar mass of copper:

M (CuO) = 16 + 64 = 80 g / mol.

3. Find the mass of copper:

m (CuO) = n * M = 3mol * 80g / mol = 240g.

Answer: m (CuO) = 240g.