vatanc17

1. The melting points of a series of 18-carbon fatty acids are stearic acid, 69.60C, oleic acid, 13.40C; linoleic acid -50C; and linolenic acid, -110 What structural aspect of these 18-carbon fatty acids can be correlated with the melting point? Provide a molecular explanation for the trend in melting points.

An unknown element was tested using a spectroscopic technique. Light was emitted from the sample at a wavelength of 525.6 nm. Calculate the energy of a photon and the energy of one mole of photons of the light.