Silver nitrate and sodium chloride reaction — law of chemical combination

1. 1.7 g of silver nitrate dissolved in 100 g of water is mixed with 0.585 g of sodium chloride dissolved in 100 g of water. The reaction forms 1.435 g of silver chloride and 0.85 g of sodium nitrate. Which law of chemical combination does this reaction show? [UPSC NDA & NA (I) 2026, GAT]