Water of Crystallisation

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1) Calculate the mass of the hydrous and anhydrous salts

2) Work out the moles of water

3) Work out the moles of anhydrous salt

4) Divide by the smallest number of moles

5) Write the whole number into the formula

Example : A sample of copper crystals has a mass og 6.80g. The sample is heated to drive off all the water of crystallisation. The mass is reduced to


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