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24-05-2020
Chemistry

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What is the molarity of a solution that is made by adding 57.3 g of MgO to 500.0 mL of solution?

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24-05-2020

Answer:

2.843 M

Explanation:

Molarity = moles / volume

Milliliters to liters:

500 mL = .500 L

Grams to moles:

MgO molar mass = 16.00 + 24.31 = 40.31 g/mol

57.3 g x 1 mol / 40.31 g = 1.421 mol

Molarity:

1.421 mol / .500 L = 2.843 M

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