Homework Help: chemistry

Posted by savannah on Monday, January 21, 2013 at 11:46pm.

calculate the wavelength (in nm) of the red light emitted by a neon sign with a frequency of 4.74 x 10^14 Hz. i have no idea how to even set this up. please someone help.

chemistry - DrBob222, Monday, January 21, 2013 at 11:52pm
A common formula to change wavelength to frequency and frequency to wavelength uses the speed of light, c.
c = frequency x wavelength
c = 3E8 m/s
chemistry - savannah, Monday, January 21, 2013 at 11:57pm
so would i set it up (3.00 x 10^8)/(4.74 x 10^-7) ?
chemistry - DrBob222, Tuesday, January 22, 2013 at 12:09am
Almost.The problem list frequency as 4.74E14 and not 4.74E-7.
3E8 = 4.74E14*wavelength.
w = 3E8/4.74E14 = ? in meters.
Convert to nm.
chemistry - savannah, Tuesday, January 22, 2013 at 12:15am
and what is the formula to convert to nm?
chemistry - DrBob222, Tuesday, January 22, 2013 at 12:17am
1E9 nm = 1 m

Answer this Question

Related Questions

Physics - A 75 W light source consumes 75 W of electric power. Typically only ...
physics - A 75 W light source consumes 75 W of electric power. Typically only ...
Chemistry - Calculate the wavelength of light emitted when each of the following...
Physics - A helium-neon laser emits light of wavelength 633 nanometers(nm). ...
Physics - A metal surface is struck with light of wavelength 430 nm releasing a ...
Phy - The index of refraction for a diamond for red light of wavelength 655 nm ...
physics - 5)a. Electrons accelerated by a potential difference of 12.23 V pass ...
Physics - a) A distant spaceship carrying a red headlight, emitting light with ...
AP Chemistry - To eject electrons from the surface of potassium metal, 222kJ/mol...
Physics - When light of wavelength 391 nm falls on a potassium surface, ...

For Further Reading

First Name:
School Subject:
Answer: