What will happen when you separate H20?

Answer 1

This is the trick known as photosynthesis, where the oxygen is split from the hydrogen and expelled as a waste gas. The hydrogen is available and used by the plant to build its tissues.

Answer 2

When you separate H2O, you will get hydrogen gas (H2) and oxygen gas (O2) as separate entities. This process usually involves electrolysis, where an electric current is passed through water to break it down into its constituent elements.