How many atoms of carbon, C, are in 0.020 g of carbon?

Question

How many atoms of carbon, C, are in 0.020 g of carbon?

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Thanh Thu 6 months 2021-07-21T16:17:16+00:00 1 Answers 28 views 0

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  1. lethu
    0
    2021-07-21T16:18:24+00:00
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    Answer:

    9.6352× 10²⁰ C atoms

    Explanation:

    From the given information,

    The molar mass of Carbon = 12 g/mol

    number of moles = 0.020g/ 12 g/mol

    number of moles = 0.0016 mol

    If 1 mole of C = 6.022 × 10²³ C atoms

    ∴

    0.0016 mol of C = (6.022 × 10²³ C atoms/ 1 mol of C)×0.0016 mol of C

    = 9.6352× 10²⁰ C atoms

    Hence, the number of carbon atoms present in 0.020 g of carbon = 9.6352× 10²⁰ C atoms

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