If our eyes could see a slightly wider region of the electromagnetic spectrum, we would see a fifth line in the balmer series emission spectrum. calculate the wavelength λ associated with the fifth line.
express your answer with the appropriate units.

Thank you for posting your question here at . I hope the answer will help you. Feel free to ask more questions here.
Use the rydberg equation 

1/wavelength = 109677[ 1/n one square - 1/n two square ] 109677 is in cm inverse 

for balmer series n one = 2 and for the fifth line n two = 7 

putting them in the equation we get 

= 397 nm 

lies in the violet region of light

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.