What is the percent composition of water in the compound magnesium sulfate heptahydrate, MgDO4•7H2O? A. 7.3% B. 24.8% C. 48.8% D. 51.2%

Question

asked Aug 25, 2024 1.5k views

1 Answer

FuePi · Answer 1 · 2024-08-30T08:45:21+0000

Answer:51. 2%

Explanation:

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 100×126/246The % of H2O in MgSO4.7H2O=