Chemistry of the Atmosphere

Question 1

What happens when there is enough oxygen during combustion for hydrocarbons?
What happens when there isn’t enough?
Reactions for the both of them.

Answer 1

When there is enough oxygen, carbon dioxide is produced and energy is released.

Fuel + O₂ → CO₂ + H₂O

When there isn’t enough oxygen, carbon monoxide is produced.

2C + O₂ —> 2CO

Question 2

What formed the world’s oceas?

Answer 2

The water vapour from the volcanic activity condensed.