Asample of co2(s) and a sample of co2(g) differ in their
1) chemical compositions
2) empirical formulas
3) molecular structures
4) physical properties

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

Find the midpoint of a segment with endpoints of 4-3i and -2+7i