Where are oxygen molecules most dense

oxygen molecules are most dense in the air because theres no other form other than co2 or h2o if you wan tot count in those molecules by far h2o would be most dense air has a low density of 4gs but water is a solid 1

Explanation:

i am positive it is c. condensing but i may be wrong

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.