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24 May, 23:32

What is the mass in grams of ONE acetic acid molecule, CH_3COOH?

A. 3.61 x 10^{25}

B. 60.0

C. 9.97 x 10^{-23}

D. 7.31 x 10^{-23}

E. 6.02 x 10^{-23}

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Answers (1)
  1. 24 May, 23:59
    0
    C. 9.97*10⁻²³

    Explanation:

    The molar mass is defined as the mass in grams of 1 mole of the molecule.

    The molar mass of acetic acid is 60.052 g/mol.

    Which means that:

    1 mole = 6.023*10²³ molecules.

    So,

    6.023*10²³ molecules of acetic acid weighs 60.052 g.

    Thus,

    1 molecule of acetic acid weighs 60.052/6.023*10²³ g.

    The mass of 1 molecule of acetic acid = 9.97*10⁻²³ g.
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