A solution is prepared by dissolving 27.7 g of CaCl₂ in 375 g of water. The density of the resulting solution is 1.05 g/mL. The concentration of CaCl₂ is ________% by mass. A)6.88 B)7.22 C)0.0722 D)0.0688 E)6.24

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The correct answer is A.The concentration of CaCl2 is 6.88% by mass.Explanation:First, we need to calculate the mass of the solution:mass of solution = mass of CaCl2 + mass of watermass of solution = 27.7 g + 375 gmass of solution = 402.7 gNext, we need to calculate the volume of the solution:volume of solution = mass of solution / density of solutionvolume of solution = 402.7 g / 1.05 g/mLvolume of solution = 383.5 mLFinally, we can calculate the concentration of CaCl2:concentration of CaCl2 = (mass of CaCl2 / mass of solution) x 100%concentration of CaCl2 = (27.7 g / 402.7 g) x 100%concentration of CaCl2 = 6.88%

A Solution Is Prepared by Dissolving 27