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31 March, 18:10

Determine the number of moles of oxygen in 3.20 moles of sodium hydrogen phosphate.

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  1. 31 March, 18:33
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    The chemical formula for sodium hydrogen phosphate is:

    Na2HPO4

    Looking at this we see that there are 4 oxygen atoms in each molecule. This means that for every mole of sodium hydrogen phosphate, there will be 4 moles of oxygen.

    So simply take the moles of the molecule (3.20) and multiply it by the number of oxygen atoms in one molecule (4).

    3.20 X 4 = 12.80 moles
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