1. "3D" option for Water. Why are the three circles different colors? 2. 3D model for Chloromethane
(CH3CI). What is the largest atom in that molecule? Why do you think it is so much larger than the other two atoms?

3. How many elements and atoms are in the compound 2 Cl(CHO)2?

4.Bonus! Select the “Playground" option and make the largest molecule you can that has a name. What is the name and chemical formula of your molecule?

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .