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

General Chemistry

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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