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7 September, 02:59

Calculate the molarity of a solution obtained dissolving 15.0 g of cobalt (Ⅱ) bromide dihydrate in enough water to make 225 mL of solution

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  1. 7 September, 03:23
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    Molarity = 0.305M

    Explanation:

    m=15g, Molar mass of CoBr2 = 218.7

    V=0.225dm3, C=?

    Moles = m/M = C*V

    Substitute and Simplify

    m/M = C*V

    15/218.7 = C*0.225

    C = 0.305M
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