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25 August, 04:10

Determine the number of moles in a 1.50 L sample of 0.625 M solution of NaCl.

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  1. 25 August, 08:07
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    0.9375 mole

    Explanation:

    Data obtained from the question include:

    Volume of solution = 1.50L

    Molarity of NaCl = 0.625 M

    Mole of NaCl = ... ?

    The molarity of a solution is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is represented as:

    Molarity = mole / Volume

    With the above equation, the number of mole of NaCl in the solution can be obtained as follow:

    0.625 = mole / 1.5

    Cross multiply to express in linear form

    Mole = 0.625 x 1.5

    Mole = 0.9375 mole

    Therefore, 0.9375 mole of NaCl is present in the solution.
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