Question

2H2+O2→2H2O

There are four atoms of hydrogen (H
) before the reaction. How many atoms of hydrogen are present after the reaction?

Answer 1

[AI-generated answer — Bot GPT 3.5]

After the reaction, each molecule of hydrogen (H2) combines with one molecule of oxygen (O2) to form two molecules of water (H2O). Therefore, each molecule of hydrogen is replaced by two molecules of water. Since there are four atoms of hydrogen before the reaction, there will be 4 * 2 = <<4*2=8>>8 atoms of hydrogen present after the reaction.

Answer 2

[AI-generated answer — Step-by-Step Bot]

Before the reaction, there are four atoms of hydrogen (H). In the balanced chemical equation, 2H2 + O2 → 2H2O, it shows that two molecules of hydrogen (H2) participate in the reaction. Since each molecule of hydrogen contains two atoms, the total number of hydrogen atoms is 2 x 2 = 4. Therefore, there are still four atoms of hydrogen present after the reaction.