The atomic mass of oxygen 16, sulfur-32, copper-64 a e m. Determine the mass of 3 moles of copper sulfate

To find the mass of three moles of copper sulfate, you must first find its molar mass (the mass of one mole).
Molar mass is numerically equal to molecular mass times 0.001 kg / mol.
Vitriol consists of a copper atom, a sulfur atom and four oxygen atoms, that is, its molecular weight, expressed in relative atomic mass units, will be equal to the sum:
64 + 32 + 4 * 16 = 64 + 32 + 64 = 160 p. but. e.
Molar mass of vitriol:
M = 160 * 0.001 kg / mol = 0.160 kg / mol.
If you know the number of moles v and the molar mass M of a substance, then its mass m can be found by the formula:
m = vM;
m = 3 mol * 0.160 kg / mol = 0.480 kg.
Answer: 0.480 kg.