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Insoluble salts for chem practical tomz

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AQA GCSE physics P1 unofficial mark scheme 05-05-2016
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    okay say for example they give insoluble salts..what do we do then :| sumun mentioned a gasometer or smthng..any ideas please?
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    React the salt with something, measure the volume of gas given off, use that to find amount (number of mols) , put back into equation to find amount of salt, caluclate mass.
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    For what question!?
Updated: May 18, 2005
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AQA physics unit 1

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