120.0 grams of calcium nitrate are weighed out and placed into a 1.5 L volumetric flask and the flask filled to the mark. What is the concentration of the nitrate ions in solution?

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Quizplus · Accepted Answer

The correct answer is A because the concentration of the nitrate ions in solution can be calculated using the formula:Concentration = (Moles of solute) / (Volume of solution in liters)The moles of calcium nitrate can be calculated using its molar mass, which is 164.09 g/mol:Moles of calcium nitrate = 120.0 g / 164.09 g/mol = 0.731 molThe volume of the solution is 1.5 L.Therefore, the concentration of the nitrate ions in solution is:Concentration = 0.731 mol / 1.5 L = 0.4875 MSince the nitrate ion has a charge of -1, the concentration of the nitrate ions in solution is also 0.4875 M.

1200 Grams of Calcium Nitrate Are Weighed Out and Placed