Question

Calculate the molecular masses of the following compounds:—
• Copper sulphate crystals
• Ammonium sulphate
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Answer 1

Answer:

hi

Explanation:

Copper sulphate crystal (CuSO4. 5H,O) (Ans.: 249.5 g/mol)

Answer 2

Question:–

• Calculate the molecular masses of the following compounds:—
• • Copper sulphate crystals
• • Ammonium sulphate

To find:–

• We have to calculate Molecular masses of Copper sulphate crystals and Ammonium sulphate

Some common information:–

Relative atomic masses :-

• Cu = 63.5
• S = 32
• O = 16
• N = 14
• H = 1

Chemical formula:-

• Copper sulphate crystals = CuSo4.5H2O
• Ammonium sulphate = (NH4)2SO4

Solution:–

1. Copper sulphate crystals

Evaluating masses.

= 63.5 + 32 + (16×4) + 5(1×2+16)

= 90 + 159.5

= 249.5 a.m.u.

2. Ammonium sulphate

Evaluating masses.

= 2(14+1×4) + 32 + (16×4)

= 2 × 18 + 32 + 64

= 132 a.m.u.