How many grams of cuso4 are contained in 500 ml of 4m solution.

Given:
V solution (CuSO4) = 500 ml = 0.5 l
Cm (CuSO4) = 4 M

To find:
m (CuSO4) -?

Decision:
1) Calculate the amount of copper (II) sulfate substance:
n (CuSO4) = Cm (CuSO4) * V solution (CuSO4) = 4 * 0.5 = 2 mol;
2) Calculate the molar mass of copper (II) sulfate:
M (CuSO4) = Mr (CuSO4) = Ar (Cu) * N (Cu) + Ar (S) * N (S) + Ar (O) * N (O) = 64 * 1 + 32 * 1 + 16 * 4 = 160 g / mol;
3) Calculate the mass of copper (II) sulfate:
m (CuSO4) = n (CuSO4) * M (CuSO4) = 2 * 160 = 320 g.

Answer: The mass of CuSO4 is 320 g.