Does a Precipitate Form?

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If 500 mL of a 4.0x10-6 mol/L CaCl2 solution is mixed with 300 mL of a 0.0040 mol/L AgNO3 solution, will a precipitate form? (Ksp(AgCl)=1.8x10-10) 

Does a precipitate of PbBr2 form if 50.0 mL of 0.0100 M Pb(NO3)2 is mixed with 50.0 mL of 0.100 M NaBr? (Ksp PbBr2 = 2.1 x 10-6)

No, because this is a supersaturated solution. 

No, because equilibrium will shift towards products,. 

Yes, because this is a supersaturated solution. 

Yes, because equilibrium will shift towards products. 

I don't know

Practice: Dissociation