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A sample that weights 0.2660 g just contains KCl and NaCl, it’s content of Cl- being...

A sample that weights 0.2660 g just contains KCl and NaCl, it’s content of Cl- being 0.1418 g, calculate the percentage of Na y K in the mixture.

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Answer #1

Mass of Na+ and K+ = mass of sample - Cl- mass = 0.266-0.1418 = 0.1242 g

Mass % of Na+ and K+ = ( 100 x mass of Na+ and K+ ) / ( sample mass)

                                                  = ( 100 x 0.1242) / ( 0.266) = 46.69 %

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