Trichloromethane and propanone are both organic liquids. The molecules within each liquid are attracted to each other by relatively weak permanent dipole-dipole interactions. When trichloromethane is mixed with propanone a strong electrostatic attraction forms between the two different molecules. [Figure showing trichloromethane, propanone, and electrostatic attraction between them] A student plans to perform an experiment to investigate the strength of this electrostatic attraction by finding the temperature change when equal volumes of trichloromethane and propanone are mixed together.