Convert each of the following quantities into energies, in kcal mol-1.
(a) A bond rotation of 750 wavenumbers (cm-1);
(b) A bond vibration of 2900 wavenumbers (cm-1);
(c) An electronic transition of 350 nm (ultraviolet light, capable of sunburn);
(d) The broadcast frequency of the audio signal of TV channel 6 (87.25 MHz; before the advent of digital TV in 2009);
(e) A "hard" X-ray with a 0.07-nm wavelength.