Question

1. the equation below shows the products formed when a solution of silver nitrate (agno3) reacts with a solution of sodium chloride (nacl). agno3 + nacl → nano3 + agcl in this equation, the total mass of the reactants is a. greater than the total mass of the products b. equal to the total mass of the product c. equal to the mass of the agcl d. less that the mass of agcl 19. when carbon and oxygen combine chemically, the mass of the product is a. greater than the mass of the carbon plus the mass of the oxygen b. equal to the mass of the carbon plus the oxygen c. equal to the mass of the carbon d. less than the mass of the carbon

Explanation:

According to the law of conservation of mass, in a chemical reaction, the total mass of the reactants is equal to the total mass of the products.
For the reaction \(AgNO_3 + NaCl
ightarrow NaNO_3 + AgCl\), the total mass of \(AgNO_3\) and \(NaCl\) (reactants) must equal the total mass of \(NaNO_3\) and \(AgCl\) (products).
For the reaction of carbon and oxygen \(C + O_2
ightarrow CO_2\) (assuming complete combustion), the mass of \(CO_2\) (product) is equal to the mass of \(C\) (carbon) plus the mass of \(O_2\) (oxygen) that reacted.

Answer:

1. B. equal to the total mass of the product
2. B. equal to the mass of the carbon plus the oxygen