A 0.8870-g mixture of sodium chloride and potassium chloride is dissolved in water and silver nitrate is added. The AgCl that precipitates has a mass of 1.913 g. Calculate the percent by mass of potassium in the initial mixture。

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  1. It is straightforward.
    a) calculate themass of the chloride in the silver chloride.
    b) calculate the chloride in .887g naCl
    subtrace b from a
    the remainder is cl in KCl. knowing that mass of chlorde ion, compute the mass of KCl.
    a bit of math, but not rocket science here.

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  2. how can a question posted 3 1/2 years ago be "trending now"?

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