What will AgNo3 + NaCl + HCl yield?? I know it will yield AgCl and NaNo3... But what does the HCl do?? Help!

Well, you've got:

AgNO3 and HCl --> AgCl and HNO3
AgNO3 and NaCl --> AgCl and NaNO3

So, AgNO3 + NaCl + HCl ---> AgCl +NaNO3 + HNO3