How much AgCl will be formed by adding 200mL of 5N HCl to a solution containing 1.7g AgNO3?

Answer 1

This is a limiting reagent (LR) problem and you know that because amounts are given for BOTH reactants. I do these the long way---easier to exlpain for me.
AgNO3 + HCl ==> AgCl + HNO3
mols AgNO3 = grams/molar mass = ?
mols HCl = M x L = ?

Using the coefficients in the balanced equation, convert mols AgNO3 to mols of AgCl.
Do the same to convert mols HCl to mols AgCl.
It is likely that the two values will not be the same which means one of them is not right; the correct value in LR problems is ALWAYS the smaller value and the reagent responsible for producing that number is the LR.
Using the smaller value for mols AgCl, convert to grams. g = mols x molar mass.