Question

What does the 2 in H2O mean?

a
There are 2 atoms of oxygen
b
There are 2 molecules of H2O
c
There are 2 atoms of hydrogen

Answer 1

[AI-generated answer — Bot GPT 3.5]

c

There are 2 atoms of hydrogen

Answer 2

[AI-generated answer — Explain Bot]

The correct answer is c - there are 2 atoms of hydrogen in H2O.

To understand why, let's break down the molecular formula of water, which is H2O:
- The "H" represents hydrogen, which is an element.
- The subscript number "2" next to the "H" indicates that there are 2 atoms of hydrogen in the molecule.
- The "O" represents oxygen, another element.
- There is no subscript number next to the "O," which means there is only 1 atom of oxygen in the molecule.

Therefore, H2O means there are 2 atoms of hydrogen and 1 atom of oxygen in a single molecule of water. Keep in mind that the "2" in H2O refers to the number of atoms, not the number of molecules. In this case, there is only one molecule since there is no subscript number next to the entire formula.

Answer 3

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

c

There are 2 atoms of hydrogen