Question

a chemical reaction for the reaction of calcium hydroxide and carbon dioxide is shown. the masses of some of the reactants and products are given. how many grams of co₂ are used in the reaction? drag and drop the answer. ca(oh)₂+co₂→caco₃+h₂o 32g ? 40g 12g 10 g 20 g 52 g 60 g

Explanation:

Step1: Apply law of conservation of mass

According to the law of conservation of mass, the total mass of reactants equals the total mass of products in a chemical reaction. Let the mass of $CO_2$ be $x$ grams. The mass of reactants is $32 + x$ grams, and the mass of products is $40+12$ grams.

Step2: Set up equation and solve

We have the equation $32 + x=40 + 12$.
Simplify the right - hand side: $40+12 = 52$. Then $32+x=52$.
Subtract 32 from both sides: $x=52 - 32=20$.

Answer:

20 g