Number of atoms in H2O

Answer 1

3 Atoms:

H2 is 2 atoms, since the subscript is a 2;

O is obviously singular.

2 + 1 = 3.

Coefficients, however, are different. You cannot change the subscript without changing the type of molecule (O is oxygen, which doesn't exist all by itself, O2 is in the air you breathe, and O3 is ozone) but coefficients can be changed because they only affect the amount of the molecules you have.

Answer 2

There are 3 atoms in H2O: 2 hydrogen atoms and 1 oxygen atom.

Answer 3

there are 3 atoms per water molecule two Hydrogen and one water.

Answer 4

4 hydrogen

2 oxygen

_________

6 in total

Answer 5

2 Hydrogen atoms are in water and 1 oxygen atom

Answer 6

2 Hydrogen and 1 Oxygen makes 3. So 3.

Answer 7

9