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10 December, 00:07

What would be the resulting molarity of a solution made by dissolving 45.7 grams of Mg (OH) 2 in enough water to make a 1087-milliliter solution? Show all of the work needed to solve this problem

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  1. 10 December, 02:33
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    Molar mass Mg (OH) 2 = 58.3197 g/mol

    Number of moles:

    45.7 / 58.3197 = > 0.7836 moles

    Volume = 1087 / 1000 = > 1.087 L

    Therefore:

    Molarity = moles / volume

    Molarity = 0.7836 / 1.087

    => 0.7208 M
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