Problem: Calculate the molarity of an aqueous solution that is 22.3% by mass calcium chloride. You might need to know that the density is 1.20 g/mL.A. 0.96B. 2.41C. 0.0024D. 3.54E. 0.035

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We’re being asked to calculate the molarity (M) of an aqueous solution that is 22.3% by mass calcium chloride. Recall that molarity is the ratio of the moles of solute and the volume of solution (in liters). In other words:


molarity (M)=moles soluteL solution


We first need to determine the number of moles of calcium chloride (CaCl2). We’re given the mass percent of calcium chloride in the solution water, 22.3%. Recall that mass percent is given by:


% Mass=mass of CaCl2mass of solution


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Problem Details

Calculate the molarity of an aqueous solution that is 22.3% by mass calcium chloride. You might need to know that the density is 1.20 g/mL.

A. 0.96
B. 2.41
C. 0.0024
D. 3.54
E. 0.035

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Molarity concept. You can view video lessons to learn Molarity. Or if you need more Molarity practice, you can also practice Molarity practice problems.

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Based on our data, we think this problem is relevant for Professor Halasyamani's class at UH.