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2 April, 16:00

How many moles of chlorine (Cl) atoms are in a sample of 1.72 * 1022 atoms?

a. 0.0286 mol Cl

b. 35.0 mol Cl

c. 1.03 * 1023 mol Cl

d. 1.04 * 1046 mol Cl

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  1. 2 April, 19:07
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    0.0286 mol Cl

    Explanation:

    to convert atoms to moles, we need Avogadro's number.

    1 mol = 6.02 x 10^23 atoms

    1.72 x 10^22 atoms (1 mol / 6.02 x 10^23) = 0.0286 moles
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