Question

4.) A sample of water contains 6 gms of MgSO4 per 100 kg of water.
Calculate its degree of hardness.
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Answer 1

Answer:

here it is hope it helps u

Answer 2

Answer:

10⁵ gms of a sample of water contain 60 gms of MgSO4

10⁶

gms of sample of water contain 60/10⁵×10⁶

= 600 gms of MgSO4

120 gms of MgSO4 has hardness = 100 ppm

600 gms of MgSO4 has hardness = 100/120 ×600

= 500 ppm

hope it helps