Iron(II) sulfate forms several hydrates with the general formula FeSO4 xH₂O, where x is an integer. If the hydrate is heated,

Question

Iron(II) sulfate forms several hydrates with the general formula FeSO4 xH₂O, where x is an integer. If the hydrate is heated, the water can be driven off,
leaving pure FeSO4 behind.

Suppose a sample of a certain hydrate is heated until all the water is removed, and it's found that the mass of the sample decreases by 11.%. Which hydrate is
it? That is, what is x?

Kunduz · Accepted Answer

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