How many millimoles (or moles) of benzocaine would be in this sample?

If a sample of benzocaine weighs 0.65 grams, how many millimoles (or moles) of benzocaine would be in the sample Additional Details:Would it be 0.040 mol or 0.004 mol

  1. Peadar58 says:

    Benzocaine:

    C9H11NO2

    1 mol is equal to atomic mass at grams.

    1 mol C = 12 grams===> 9 mol = 12 x 9 = 108 grams C
    1 mol H = 1 gram=====> 11mol= 11 grams H
    1 mol N = 14 grams====> 1mol = 14 grams N
    1 mol O= 16 grams=====> 2mol = 32 grams O

    Then:

    108 + 11 + 14 + 32 = 165 grams Benzocaine

    If 1 mol Benzocaine—————————> 165 grams
    then x mol ————————————-> 0.65 grams

    x= 0.040 mol or 40 millimol

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