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11 September, 23:31

11. If there are 8.24 x 1022 molecules of NaCl in a salt shaker, what is the mass of the salt?

Answer: 8.00 a Nacl

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  1. 11 September, 23:52
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    Answer: 8.12 g NaCl

    Explanation: Use Avogadro's number to find the number of m

    moles of NaCl:

    8.24x10²² molecules NaCl / 1 mole NaCl / 6.022x10²³ molecules NaCl

    = 0.14 mole NaCl

    Next convert moles to grams NaCl using its molar mass;

    0.14 mole NaCl x 58g NaCl / 1 mole NaCl

    = 8.12 g NaCl
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