What hemisphere is Austin in?

northern hemisphere

Explanation:

Austin is located at latitude 30.26715 and longitude -97.74306. It is part of America and the northern hemisphere.

for the points

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.