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30 July, 03:45

Quinine, an antimalarial drug, is 8.63% nitrogen. there are two nitrogen atoms per molecule. what is the molecular weight of quinine?

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  1. 30 July, 05:08
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    The formula of quinine is C20H24N2O2 and the respective atomic weights are C = 12.0096, H = 1.008, N=14.0067 and O=15.9994 so C x 20 = 24.192 and H x24 = 24.192 and N x 2 = 28.0134 and O x 2 = 31.998 for an approximate total of 324.4 grams/mole for the molecular weight of quinine.
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