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30 August, 15:02

If you have 110.0 grams of an unknown compound that contains 12.3 grams of hydrogen, what is the percent by mass of hydrogen in the compound

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  1. 30 August, 15:59
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    All you have to do is a simple division "parts over the whole"

    12.3 grams H / 110 grams compound x 100 = 11.2%
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