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4 March, 12:57

What's the percent by mass of carbon in c10h14n2

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  1. 4 March, 13:08
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    the answer is 74.03%

    Explanation:

    Add all the masses together, M of C = 120.1, M of H = 14.4 and M of N = 28.02. Adding all those together will give you the mass of the compound, then u divide the mass of carbon by the mass of compound and multiply by 100 to get the percent by mass.

    120.1 + 14.4 + 28.02 = 162.26

    120.1/162.26 x 100 = 74.03%
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