1) 1 molecules
2) 2 oxygen atoms
3)2 moles of Al2O3 are formed
4)4:3
Answer: By using electrolysis.
Explanation:
Electrolysis is a chemical change produced by sending an electric current through a compound. Electrolysis works because the hydrogen and oxygen ions are held together by an electric attraction.
All Elements are obtained in the periodic table & water is Not an element it is a compound.

Where v is the volume(in L) and t is the temperature(in °K)

Answer:
region 2 and region 3
Explanation:
you can tell by the color of the land my friends^^