Question

Relative molecular mass of hydrated copper sulphate

Answer 1

molar mass of CuSO4.5H2O = atomic mass of Cu + atom mass of S + 4× atomic mass of O +5× {2 × atomic mass of H + atomic mass of O }

= 63.5 + 32 + 4× 16 +5 (2 + 16) g

=63.5 +32 + 64 + 90 g

= 249.5 g

Answer 2

Answer:

249.69 g

Explanation:

THE MOLECULAR MASS WILL BE THE SUM OF ALL MASSES OF ALL ATOMS PRESENT..

SO,

MASS OF COPPER 63.5

MASS OF SULPHUR 32

MASS OF OXYGEN 16

MASS OF HYDROGEN 1

FORMULA OF HYDRATED COPPER SULPHATE IS

CuSo4.5H2O

=63.5+32+4×16+5(1×2+16)

=63.5+32+64+5(18)

=249.5g