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 8 8 5 5 2 2 4 4 Skip to navigation

Answer 1

The balanced chemical reaction you provided is:

\[ 2H_2 + O_2 \rightarrow 2H_2O \]

In this reaction, the left side shows 4 hydrogen atoms (from \(2H_2\), which is 2 molecules of \(H_2\), and each \(H_2\) has 2 hydrogen atoms).

On the right side, in the products \(2H_2O\), there are also 4 hydrogen atoms (since each \(H_2O\) has 2 hydrogen atoms, and there are 2 molecules of \(H_2O\)).

Therefore, the total number of hydrogen atoms present after the reaction remains 4.

So, the correct answer is 4.