What conclusion can be drawn about the heat of vaporization of ethanol from the heating curve? a)the potential energy of the ethanol molecules increases through vaporization. b)the temperature increase converts bonding forces into intermolecular forces. c)the kinetic energy of vaporization represents a greater change of stored energy. d)the ethanol is stabilized by strong intermolecular forces between the molecules?

it's

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.