Question: according to model 1 how many atoms of hydrogen and oxygen are in 1 molecule of water?
Answer: As an example, let's say we have a very tiny drop of water, say 1 microliter, which would have a mass of 0.001 grams. The chemical formula for water is H2O which means that every molecule of water has 2 atoms of hydrogen (H) and one atom of oxygen (O).