What do you think can account for the difference in field strengths at positions (50, 0) and (-50, 0)?

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

Idon't know hope someone you

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck