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15 December, 05:11

The percent by mass of water in the hydrate na2so4 * 10h20 is closest to

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  1. 15 December, 07:01
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    Total mass of the crystal:

    23 x 2 + 32 + 16 x 4 + 10 x 18

    = 322

    Mass of water:

    10 x 18

    = 180

    Percentage of water = 180 / 322 x 100 = 55.9%
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