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12 September, 22:56

What is the mass of 4.38 x 10^24 formula units of sodium chloride (NaCl) ?

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Answers (1)
  1. 12 September, 23:21
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    Mass = 427.05 g

    Explanation:

    Given dа ta:

    Formula units of sodium chloride = 4.38 * 10²⁴

    Mass of NaCl = ?

    Solution:

    One mole contain formula units = 6.022 * 10²³

    4.38*10²⁴ formula units * 1mol / 6.022 * 10²³ formula units

    0.73 * 10¹ mol

    7.3 mol

    Mass of NaCl:

    Mass = number of moles * molar mass

    Mass = 7.3 mol * 58.5 g/mol

    Mass = 427.05 g
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