Question

I am trying to figure out the molecular, ionic, and net equation for this question.
HCl reacts with the precipitate formed from mixing Ni(NO3)2 and NaOH .

This is what I got for the molecular but it is saying it wrong. Please help. Thank you.

HCl(aq) + Ni(NO3)2(aq) + NaOH(aq) --> Ni(OH2)(s) + NaNO3(aq) + NiCl2(aq) + H2O(l)

Answer 1

I think you probably want two reactions.
1.
Ni(NO3)2 + + 2NaOH ==> Ni(OH)2(s) + 2NaNO3

Then 2 is:
Ni(OH)2 + 2HCl ==> NiCl2 + 2H2O
Then convert that last balanced molecula equation to the ionic then to the net ionic equation.