Question

one molecule of calcium oxide, cao, and one molecule of carbon dioxide, co₂, combine in a chemical reaction to form one substance. given that matter is neither created nor destroyed, which chemical formula identifies the product of this reaction? (1 point)

○ caco₃

○ ca₂o₃

○ caco₂

○ ca₂co₃

Explanation:

Step1: Write the reactants

The reactants are \(CaO\) (calcium oxide) and \(CO_{2}\) (carbon - dioxide).

Step2: Combine elements based on conservation of mass

When \(CaO\) and \(CO_{2}\) react, the calcium (\(Ca\)), carbon (\(C\)), and oxygen (\(O\)) atoms combine. Calcium has a + 2 charge, carbonate (\(CO_{3}^{2 -}\)) has a - 2 charge. The chemical reaction is \(CaO+CO_{2}
ightarrow CaCO_{3}\).

Answer:

A. \(CaCO_{3}\)