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20 January, 00:17

1. Determine the number of atoms in 2.50 mol Zn.

2. so molznxlmolo

"6.02x10

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Answers (1)
  1. 20 January, 00:22
    0
    15.1 * 10²³ atoms

    Explanation:

    Given dа ta:

    Number of moles of Zn = 2.50 mol

    Number of atoms = ?

    Solution:

    It is the number of atoms, ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

    The number 6.022 * 10²³ is called Avogadro number.

    For example,

    18 g of water = 1 mole = 6.022 * 10²³ molecules of water

    1.008 g of hydrogen = 1 mole = 6.022 * 10²³ atoms of hydrogen

    For 2.50 mole of Zn:

    one mole of zinc = 6.022 * 10²³ atoms

    2.50 * 6.022 * 10²³ atoms

    15.1 * 10²³ atoms
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