A 2.37 g sample of a mixture of FeCl2 and Fe(NO3)2 is treated with excess AgNO3(aq). The precipitate is filtered off, dried and weighed. The dried precipitate weighs 4.05 g. What is the percentage by mass of FeCl2 in the original mixture? Your answer must be accurate to two sig figs.

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Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO,),(aq), until no further…

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Q: A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)₂(aq), until no further…

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Q: A 185.0 mL sample of 1.200 M Pb(NO3)2 is mixed with 99.50 mL of 1.500 M NaCl and the PbCl2…

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A: Given: CuCl2 or Cu(NO3)2  is added to the aqueous KOH, a solid precipitate is formed.