Chemistry, asked by khatoonnusrat654, 4 months ago

find the percentage mass of water in Epsom salt MgSO4. 7H2O

Answers

Answered by sjaitely

1

Answer:

Relative molecular mass of MgSO4.7H2O

=24+32+(16×4)+7(2+16)

=24+32+64+126=246

26g of Epsom salt contains 126g of water of crystallisation.

Hence, 100g of Epsom salt contains 100×126/246

The % of H2O in MgSO4.7H2O=51.2

Explanation:

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