Question- 1) A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz (MHz), where 1MHz=106Hz.
Calculate the broadcast wavelength of the radio station 90.90 FM. Express your answer in meters to four significant figures.
2) What is the change in energy, ?E, in kilojoules per mole of hydrogen atoms for an electron transition from n=5 to n=2?
Articulate your answer in kilojoules per mole to three significant figures.
Please illustrate solutions if you can! Thanks!