Is conservation of mass and matter true in the reaction: AgNO3+HCI=AgCI+HNO3?

The conservation of mass and matter is true

Explanation: The law of conservation of mass requires that the mass of reactants and products be equal in chemical reactions.

Given the equation;

AgNO₃ + HCI → AgCI + HNO₃

The equation is balanced because, it has 1 silver atom, 1 nitrogen, 3 oxygen atoms, 1 hydrogen atom, and 1 chloride atom on both side of the equation. Therefore, the mass of the reactants and the products is equal which makes the law of conservation of mass hold. The conservation of matter is also true since the reaction process without changing the number of atoms of each element.