Chemistry, asked by Noimin, 10 days ago

Magnesium sulphate crystals (MgSO4.7H2O) can be dehydrated by heating . Calculate the percentage by mass of water present in the molecule.

Answers

Answered by pakidosgraphics
0

Answer:

51.2

Explanation:

Relative molecular mass of MgSO .7H2 O

=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 H2  O in MgSO4.7H2O   = 51.2

Hope this helps you! ^-^

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