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

Question

Samantha

Chemistry

23 October, 22:28

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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Answers (1)

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Alyson Sanchez · Answer 1

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