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14 July, 06:25

What is the percentage of water in the following compound?

Sodium carbonate decahydrate, Na2CO3 • 10H2O

% by mass H2O

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  1. 14 July, 10:09
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    Mass of Na2CO3, then add 10 (molecular mass of water which is 18g)

    So we have 106g+180g = 286g if we are looking for the percentage of water in the compound we do this 180g/286g = 62.9

    SO2 because sulfurs atomic mass is 32g and Oxygen atomic mass is 16g
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