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Question 4.9: Calculating Molarity from Mass and Volume A sample of NaNO3 ...

Calculating Molarity from Mass and Volume

A sample of NaNO_3 weighing 0.38 g is placed in a 50.0-mL volumetric flask. The flask is then filled with water to the mark on the neck, dissolving the solid. What is the molarity of the resulting solution?

PROBLEM STRATEGY

To calculate the molarity, you need the moles of solute. Therefore, you first convert grams NaNO_3 to moles. The molarity equals the moles of solute divided by the liters of solution.

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