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21 September, 11:33

Which of the following has the most atoms per mole?

a. BaSO4

b. NaNO2

c. KMnO4

d. KCl

e. Na3PO4

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Answers (1)
  1. 21 September, 11:46
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    e) Na₃PO₄

    Explanation:

    a) BaSO₄

    1 mole of BaSO ₄ = 6.022*10²³ molecules

    1 mole of BaSO ₄ contain 1 atom of Ba one atom of S and four atoms of O.

    Total number of atoms = 6 atoms

    6.022*10²³ * 6 atoms = 36.132 * 10²³ atoms

    b) NaNO₂

    1 mole of NaNO₂ = 6.022*10²³ molecules

    1 mole of NaNO₂ contain 1 atom of Na one atom of N and two atoms of O.

    Total number of atoms = 4 atoms

    6.022*10²³ * 4 atoms = 24.088 * 10²³ atoms

    c) KMnO₄

    1 mole of KMnO₄ = 6.022*10²³ molecules

    1 mole of KMnO₄ contain 1 atom of K one atom of Mn and four atoms of O.

    Total number of atoms = 6 atoms

    6.022*10²³ * 6 atoms = 36.132 * 10²³ atoms

    d) KCl

    1 mole of KCl = 6.022*10²³ molecules

    1 mole of KCl contain 1 atom of K one atom of Cl.

    Total number of atoms = 2 atoms

    6.022*10²³ * 2 atoms = 12.044 * 10²³ atoms

    e) Na₃PO₄

    1 mole of Na₃PO₄ = 6.022*10²³ molecules

    1 mole of Na₃PO₄ contain 3 atom of Na one atom of P and four atoms of O.

    Total number of atoms = 8 atoms

    6.022*10²³ * 8 atoms = 48.176*10²³ atoms
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