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22 July, 10:32

How many moles of c9h8o4 are in a 0.400 g tablet of aspirin?

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  1. 22 July, 11:20
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    From the periodic table:

    mass of hydrogen = 1 grams

    mass of oxygen = 16 grams

    mass of carbon = 12 grams

    This means that:

    mass of one mole of aspirin = 9 (12) + 8 (1) + 4 (16) = 180 grams

    number of moles can be calculated using the following rule:

    number of moles = mass / molar mass

    number of moles = 0.4 / 180 = 2.223 x 10^-3 moles
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