Question

This reaction occurs in a closed container.

CaO (s) + H2O (l) → Ca(OH) 2 (s)
How do the number of atoms in the reactants compare to the number of atoms in the product?
○ A. There are more atoms in the product than in the reactants.
B. There are fewer atoms in the product than in the reactants.
C. There are fewer oxygen atoms in the product than in the reactants.
D. There are more hydrogen atoms in the product than in the reactants.
E. There are the same number of atoms in the product and the reactants.

Answer 1

[AI-generated answer — Bot GPT 3.5]

E. There are the same number of atoms in the product and the reactants.

In this reaction, there are 1 Ca atom, 1 O atom, and 1 H atom on each side of the equation, so the number of atoms remains constant.