Problem: Part B. If 14.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain? Express your answer to three significant figures and include the appropriate units.Hydrates are solid compounds that contain water molecules. When hydrates are heated, the water molecules evaporate, producing the anhydrous form of the compound. The formula of a hydrate may be written in two different ways. For example, aluminum chloride hexahydrate can be written as [Al(H2O)6]Cl3 or as AlCl3⋅6H2O. The first formula more accurately shows the bonding arrangement, whereas the second formula makes it easier to see that the anhydrous form of the compound is aluminum chloride.

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Part B. If 14.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain? 

Express your answer to three significant figures and include the appropriate units.


Hydrates are solid compounds that contain water molecules. When hydrates are heated, the water molecules evaporate, producing the anhydrous form of the compound. The formula of a hydrate may be written in two different ways. For example, aluminum chloride hexahydrate can be written as [Al(H2O)6]Cl3 or as AlCl3⋅6H2O. The first formula more accurately shows the bonding arrangement, whereas the second formula makes it easier to see that the anhydrous form of the compound is aluminum chloride.

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