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15 July, 10:27

Isopropyl Alcohol (C3H8O) is the active ingredient in hand sanitizer. If I have 125 grams of Isopropyl Alcohol (C3H8O) ...

b. How many Hydrogen atoms are present? (round answer to 1 decimal place)

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  1. 15 July, 10:38
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    There are 1*10^25 H atoms present

    Explanation:

    Step 1: data given

    Mass of Isopropyl Alcohol (C3H8O) = 125 grams

    Molar mass of Isopropyl Alcohol (C3H8O) = 60.1 g/mol

    Number of Avogadro = 6.02 * 10^23 / mol

    Step 2: Calculate moles Isopropyl Alcohol

    Calculate moles Isopropyl Alcohol = mass C3H8O / molar mass C3H8O

    Calculate moles Isopropyl Alcohol = 125 grams / 60.1 g/mol

    Calculate moles Isopropyl Alcohol = 2.08 moles

    Step 3: Calculate moles of hydrogen

    For 1 mol C3H8O we have 8 moles hydrogen

    For 2.08 moles we have 8*2.08 = 16.64 moles hydrogen

    Step 4: Calculate amount of hydrogen atoms

    Hydorgen atoms = moles H * number of Avogadro

    Hydrogen atoms = 16.64 moles * 6.02 * 10^23 / mol

    Hydorge, atoms = 1*10^25 H atoms

    There are 1*10^25 H atoms present
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