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How many moles of water molecules are in 4.82 g of magnesium sulfate heptahydrate

How many moles of water molecules are in 4.82 g of magnesium sulfate heptahydrate

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Answer #1

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246.366 grams of magnesiumsulphate heptahydrate contains ------------------------------7 moles of water

4.82 grams of magnesiumsulphate heptahydrate contains ------------------------------    ?moles of water

                        = 4.82*7/246.366

                      = 0.136 moles of water molecules

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