Write the formula unit mass of [a] CUSO4 [b] 5H2O

write the formula unit mass of
[a] CUSO4
[b] 5H2O

  1. CuSO4
    Mass no. of Cu = 63.54
    mass no. of S = 32
    mass no. of O = 16
    CuSO4 = (63.54) + 32 + (4 X 16)
    = 159.54

  2. 5H2O
    mass of O = 16
    mass of H = 1
    5H2O = 5 [( 1 X 2 ) + 16]
    = 5 X 18
    = 90