You're right, the correct formula for calcium chloride is CaCl2; however, I don't think there is a reaction between NH4Cl and Ca(NO3)2. I would write
NH4Cl(aq) + Ca(NO3)2(aq) ==> No reaction.
Consider the following double displacement reactions.
For each reaction, complete and balance the equation and give the net ionic equation.
NH4Cl(aq)+Ca(NO3)2(aq) -> NH4(NO3)2+CaCl
the second half of the equation is what I had done but I think its not right...
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