Question

Number of molecules of hydrogen present in 90 g water

Answer 1

There are 2 molecules of hydrogen in one molecule of water as the formula for water is H2O. It's 2 ATOMS OF HYDROGEN AND, 1 ATOM OF OXYGEN MAKES UP A WATER MOLECULE, I.e, H2O.

Explanation:

Hope this answer is helpful for you.

Thank you.

IF THIS ANSWER IS HELPFUL FOR YOU THEN PLEASE MARK ME BRAINLIEST