Question
Use the chemical reaction to answer the 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
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
Answers
GPT-4o mini
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**.
- 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**.