What is the total number of protons in an h2o atom?

The atomic number of H2O is 18 hence it contains 18 protons. Hope this helps.

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

The answer is !