Question

calculate the mass number of CuSo4. 5H20

Answer 1

molecular mass of Cu= 63
molecular mass of S = 32
molecular mass of O = 16
molecular mass of H= 02

so net molecular mass of cuso4.5h20=63+32+(16*4)+5(2+16)=249

Answer 2

Atomic mass of H = 1g
Atomic mass of O = 16g
Atomic mass of Cu = 63.5g
Atomic mass of S = 32g

now ,
molar mass of CuSO4.5H2O = Atomic mass of Cu + Atomic 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
249.5g is ur answer....

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