Ineed to know how to do this because i do not know how.

I'm pretty sure that you would divide the grams of the compound by the atomic mass of the compound.

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.

Where are the questions