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posted by lee on Wednesday, April 17, 2013 at 10:25am.
What NaCl concentration results when 279 mL of a 0.640 M NaCl solution is mixed with 427 mL of a 0.490 M NaCl solution?
(.640)(.279) + (.490)(.427) = (x)(.279+.427) x = .549 M
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