Based upon the structures of acetylsalicylic acid, acetaminophen, and caffeine, including their functional groups and overall polarity, which best explains why ethanol is likely responsible for the fact that ASA and APHEN elute first in this solvent?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms