Question

How many molecules are in H2O? How do you know?

Answer 1

There are 6 of these molecules. H2O is a molecule made of H for hydrogen and O for oxygen. I know because the smaller number is the number of atoms of the element to the left of it.

Answer 2

Answer:

12 molecules

Explanation:

H2O is a molecule made of H for hydrogen and O for oxygen. There are 12 of these molecules. The smaller number is the number of atoms of the element to the left of it.