Question

What does the following symbols illustrate?

Answer 1

Answer:

O means a single atom of oxygen.

2 O means 2 atoms of oxygen.

O₂ means a single molecule of oxygen.

3O₂ means 3 molecules of oxygen.

Answer 2

Answer:

1- 5 molecules of oxygen.

2- two moles of oxygen.

3- two molecules of ozone.

4- two atoms of nitrogen.