Use the chemical reaction to answer the question.

Question

2H2 + 02 → 2H20
There are four atoms of hydrogen (H) before the reaction. How many atoms of hydrogen are present after the reaction?
(1 point)
02
04
05
08

Answer 1

In the chemical reaction \(2H_2 + O_2 \rightarrow 2H_2O\), the number of hydrogen atoms can be analyzed as follows:

• Before the reaction, there are \(2H_2\) molecules, which means there are \(2 \times 2 = 4\) hydrogen atoms.
• After the reaction, the products are \(2H_2O\), and each \(H_2O\) molecule contains 2 hydrogen atoms. Therefore, \(2H_2O\) contains \(2 \times 2 = 4\) hydrogen atoms.

Thus, there are 4 atoms of hydrogen present after the reaction.

The correct answer is 04.