Please Answer Fast! (15 pts) (Thanks in Advance) When using the "ball and stick" drawing method of drawing a compound, which element usually goes in the center of the model?

explanation:

newton's third law, for every action there is an equal and opposite reaction.

d) physical means can be used to separate the components of air.

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: