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The molarity (M) of an aqueous solution containing 22.5 g of sucrose (C₁₂H₂₂O₁₁) in 35.5 mL of solution is:
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6. Chemical Quantities & Aqueous Reactions
Molarity
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What is the molarity of a NaCl solution prepared by dissolving 0.159 mol of NaCl in 350 mL of solution?
A
0.227 M
B
0.454 M
C
0.350 M
D
0.159 M
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Understand the concept of molarity, which is defined as the number of moles of solute per liter of solution. The formula for molarity (M) is: , where is the number of moles of solute and is the volume of the solution in liters.
Identify the given values: 0.159 mol of NaCl is the number of moles of solute, and 350 mL is the volume of the solution.
Convert the volume from milliliters to liters, as molarity requires the volume in liters. Use the conversion factor: 1 L = 1000 mL. Therefore, L.
Substitute the values into the molarity formula: .
Calculate the molarity by performing the division. This will give you the molarity of the NaCl solution.
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