Question

How old is H2O or water?​

Answer 1

Earth's water is 4.5 billion years old.

Step-by-step explanation:

Water is a transparent, odorless, tasteless liquid, a compound of hydrogen and oxygen, H2O, freezing at 32°F or 0°C and boiling at 212°F or 100°C, that in a more or less impure constitutes rain, oceans, lakes, rivers, etc.: it contains 11.188 percent hydrogen and 88.812 percent oxygen, by weight.

Answer 2

4.5 billion years old

hope this helps