w = Ar*n/Mr Mr(CuSO4) = Mr(Cu) + Mr (S) + Mr(O)*4 + Mr(H)*2*5 + Mr(O)*5 = 250 w(H2O) = 18*5/250 * 100% = 36%
w = Ar*n/Mr
Mr(CuSO4) = Mr(Cu) + Mr (S) + Mr(O)*4 + Mr(H)*2*5 + Mr(O)*5 = 250
w(H2O) = 18*5/250 * 100% = 36%