If one mole of Pb(NO3)2 reacts with two moles of NaI, how many moles of PbI2 will be formed?

Write the equation.



From the given data, this is what you need to get (since PbI2 is produced, NaNO3 should be the other product). Now, you need to balance the equation.

That is your first step. When you balance it, post what you did, then we'll carry on.

Pb(NO3)2 + 2NaI yields PbI2 + 2NaNO3

Oh, I guess I missed that '2' then... Anyway, this will not affect the final result in any way.