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5 October, 02:08

For an experiment, we need 4.5 L of a 1 M solution of Nacl. How many moles of NaCl do we need?

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  1. 5 October, 02:11
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    Answer: 4.5 moles

    Explanation:

    Given that:

    volume of NaCl = 4.5 L

    concentration of NaCl = 1M

    (Note that 1M is the same as 1 mol/L

    Amount of moles of NaCl = ?

    Recall that the concentration of a solution depends on the amount of solute dissolved in a particular volume of solvent.

    I. e Concentration in mol/L =

    Amount in moles / Volume in liters

    1 mol/L = Amount in moles / 4.5 L

    Amount in moles = 1 mol/L x 4.5 L

    = 4.5 moles

    Thus, we need 4.5 moles of NaCl to dissolve in 4.5 L to make 1 M solution of NaCl.
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