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A 2.500×10−2 M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving...

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Chemistry

A 2.500×10−2M solution of NaCl in water is at 20.0∘C. Thesample was created by dissolving a sample of NaCl in water and thenbringing the volume up to 1.000 L. It was determined that thevolume of water needed to do this was 999.3 mL . The density ofwater at 20.0∘C is 0.9982 g/mL.

Calculate the molality of the salt solution. XNaCl =2.506 X 10-2 m

Calculate the mole fraction of salt in this solution.XNaCl = ???

Calculate the concentration of the salt solution in percent bymass. Percent by mass NaCl = ???

Calculate the concentration of the salt solution in parts permillion. Parts per million NaCl = ???

Answer & Explanation Solved by verified expert
4.2 Ratings (506 Votes)
in 1000L you have 2500x102 mol NaCl 2500x102 mol NaCl x 5844g mol 1461 g NaCl 9993mL x 09982g mL x 1kg 1000g 099750kg H2O 9993mL    See Answer
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