A lamp rated at 32 W (1 W = 1 J*s^-1) emits violet light of wavelength 420 nm. How many photons of violet light can the lamp generate in 2.0 s? How many moles of photons are emitted in that time interval?
I'm having difficulty starting this problem, I'm not sure which formula I should use.
How to start on 1B.9
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Rohit Ghosh 4F
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Re: How to start on 1B.9
You can start by using the equation E = hc / lambda. Solve for E and use that to find the number of photons.
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