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14 September, 06:28

A chemist prepares a solution of calcium bromide CaBr2 by measuring out 4.81μmol of calcium bromide into a 50. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in / μmolL of the chemist's calcium bromide solution. Round your answer to 2 significant digits.

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  1. 14 September, 06:29
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    The concentration of the CaBr2 solution is 96 µmol/L

    Explanation:

    Step 1: Data given

    Moles of Calciumbromide (CaBr2) = 4.81 µmol

    Volume of the flask = 50.0 mL = 0.05 L

    Step 2: Calculate the concentration of Calciumbromide

    Concentration CaBr2 = moles CaBr2 / volume

    Concentration CaBr2 = 4.81 µmol / 0.05 L

    Concentration CaBr2 = 96.2 µmol / L = 96.2 µM

    The concentration of the CaBr2 solution is 96 µmol/L
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