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16 December, 13:03

Calculate the molarity 20ml of 3.5 m kci in to a final volume of 100 ml

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  1. 16 December, 14:57
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    Molarity = 0.7 M

    Explanation:

    Given dа ta:

    Volume of KCl = 20 mL (0.02 L)

    Molarity = 3.5 M

    Final volume = 100 mL (0.1 L)

    Molarity in 100 mL = ?

    Solution:

    Molarity = number of moles of solute / volume in litter.

    First of all we will determine the number of moles of KCl available.

    Number of moles = molarity * volume in litter

    Number of moles = 3.5 M * 0.02 L

    Number of moles = 0.07 mol

    Molarity in 100 mL.

    Molarity = number of moles / volume in litter

    Molarity = 0.07 mol / 0.1 L

    Molarity = 0.7 M
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