AQA Jun 2015 Paper 1 Q4

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do not write outside the box a a sample of hydrated nickel sulfate niso xh o with a mass of g was heated to remove all water of crystallisation the solid remaining had a mass of g calculate the value of the integer x show your working marks b suggest how a student doing this experiment could check that all the water had been removed marks turn over for the next question turn over wmp jun chem

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