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4 January, 08:19

How many atoms are in 0.075 mol of helium

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Answers (1)
  1. 4 January, 09:02
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    4.52 * 10²² atoms (3 s. f.)

    Explanation:

    Number of atoms

    = number of moles * Avogadro's constant

    = number of moles * 6.022 * 10²³

    Number of atoms

    = 0.075 * 6.022 * 10²³

    = 4.52 * 10²² (3 s. f.)
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