Percent composition problem?

clopez8

New member
A sample of metal containing only Ag (AW 107.87) and Cu (AW 63.54) weights 0.1946 grams. The sample is dissolved in nitric acid to form Ag+ and Cu2+. The solution is reacted with an excess of IO3- and the precipitate of Cu(IO3)2 (AW 413.3) and AgIO3 (AW 282.8) is filtered and dried. The precipitate weights 0.7225 grams. What is the composition of the metal in percent?

I don't know how to start. Can someone please explain every step. Thanks!
 
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