Use the chemical reaction to answer the question.
2H2+O2→2H2O
There are four atoms of hydrogen (H
) before the reaction. How many atoms of hydrogen are present after the reaction?
(1 point)
Responses
5
5
8
8
4
4
2
The correct answer is 4.
To determine the number of atoms of hydrogen present after the reaction, we need to analyze the balanced chemical equation:
2H2 + O2 → 2H2O
The coefficient in front of the hydrogen (H2) is 2. This indicates that there are 2 molecules of hydrogen present in the reactants. Since each molecule of hydrogen contains 2 atoms, we can calculate the total number of atoms of hydrogen as:
2 molecules x 2 atoms/molecule = 4 atoms
Therefore, there are 4 atoms of hydrogen present after the reaction. So the correct answer is option 4.