Sodium reacts with silver nitrate to produce silver chloride and sodium nitrate.
c) Find the weights of reactants and products

Weight of $NaCl$=58.44g
Weight of $AgN{O}_3$=169.87g
Weight of $AgCl$=143.32g
Weight of $NaN{O}_3$=84.99g

Therefore, the weight of reactants and products are-
$NaCl+AgN{O}_3\to AgCl+NaN{O}_3$
(23+35.5) +(108+14+48) →
(23+14+48) + (108+35.5)
58.5 + 170 → 85 + 143.5
228.5g → 228.5g
Thus, the weight of reactant = weight of product which is 228.5g