Oxygen has an atomic number of 8. the n = 1 energy level has two electrons, and the n = 2 energy level has six electrons. oxygen's valence is
+2
-2
+1
-1

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?

Coral have a symbiotic relationship with what in order to eat?

Approximately what wavelength of light is best absorbed by chlorophyll a