Posted by **cheri** on Wednesday, September 19, 2012 at 5:10pm.

A variety of ions including Na+, K+, NH4

+,

Pb2+, Fe2+, NO3

−, Cl−, Br−, S2−, and CO3

2−

are mixed in a beaker of water. If you

analyzed the precipitates, which substances

would you expect to find?

1. PbS and FeCO3

2. FeCl2 and KCl

3. NaBr and Pb(NO3)2

4. PbCO3 and NaCl

5. NaNO3 and K2S

6. FeCO3 and KNO3

7. FeS and Na2CO3

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