more help plz!?

Question

39.Predict the product for the following reaction:

NaI(s) + Pb(NO3)2(s)  _______

a.NaNO3(aq) + PbI(s)
b.Na(NO3)2(aq)+ PbI2(s)
c.Na3(NO3)2(aq) + PbI(s)
d.NaNO3(aq) + PbI2(s)

40.What type of reaction would have occurred in the previous question?

a. combustion
b. formation
c. single replacement
d. double replacement

Answer 1

Just off the top of my head i believe that the answer for 39 is D, however I believe that it is 2NaNO32 + PbI. 40 is a single replacement. However I can not grantee that that is correct, you should check this for yourself by looking up the valency tables and balancing the equation for yourself. Hope this helps.