Chemistry, asked by Ravinrryhcsyi, 9 months ago

A sample of water contained 30 ppm of MgSO4, its hardness is x + 20 ppm. What is 'r'.

Answers

Answered by nizixtarr

1

Answer:

Molecular weight of MgSO

4

=120 gms.

120 gms of MgSO

4

has hardness =100 ppm.

30 ppm of MgSO

4

has hardness =

120

100

×30=25 ppm.

Explanation:

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