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Chemistry 11 Online
OpenStudy (anonymous):

Magnesium sulfate is also a hydrate and has the formula: MgSO4 . X H20. Of a 3.38 gram sample of the PURE hydrate, only 1.65 grams remained after heating in a crucible. What is the formula of the hydrate?

OpenStudy (aaronq):

so you had a total mass of the hydrate (MgSO4 . X H20) of 3.38 g then you heated it (removed all the water) and had left (MgSO4) 1.65 g what is the mass that evaporated? 3.38 g-1.65 g= mass of water convert both of the values, MgSO4 1.65 g and the mass of the water, to moles and see in what proportion they are in

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