10 Molucular formula about water cristallization
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The % water of crystallisation and the formula of the salt are calculated as follows: Suppose 6.25g of blue hydrated copper(II) sulphate, CuSO4.xH2O, (x unknown) was gently heated in a crucible until the mass remaining was 4.00g. This is the white anhydrous copper(II) sulphate.
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