The “alum” used in cooking is potassium aluminum sulfate hydrate, KAl(SO4)2 ∙ x H2O. To find the value of x, you can heat a sample of the compound to drive off all of the water and leave only KAl(SO4)2. Assume you heat 4.74 g of the hydrated compound and that the sample loses 2.16 g of water. What is the value of x?

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Chapter2: Atoms Molecules And Ions
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Problem 95PS: Epsom salt is used in tanning leather and in medicine. It is hydrated magnesium sulfate, MgSO4 7...
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4. The “alum” used in cooking is potassium aluminum sulfate hydrate, KAl(SO4)2 ∙ x H2O. To find the value of x, you can heat a sample of the compound to drive off all of the water and leave only KAl(SO4)2.
Assume you heat 4.74 g of the hydrated compound and that the sample loses 2.16 g of water. What is the value of x?

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