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13 October, 22:02

1. What is the molar mass of Aspirin (C9H8O4) ? If you have 360.4 grams of Aspirin, how many moles of Aspirin do you have? How many Aspirin molecules do you have? How many carbon atoms do you have?

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  1. 13 October, 22:30
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    (a). molar mass = (12*9) + (1*8) + (16*4)

    =180.0g

    (b). moles of Aspirin

    moles=mass (g) : molar mass

    =360.4:180.0

    =2.002moles

    (c). molecules of Aspirin

    To get molecules just multiply moles of Aspirin by Avocado number.

    =2.002*6.022*10^23

    =1.206*10^24 molecules

    (d) number of carbon atoms

    =12*9

    =108 carbon
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