42

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How did you come up with that anwser?

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its the ultimate answer, ill explain when you are older

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What's the problem?

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Calculate the frequency of a spectral line associated with the transition from n=5 to n=4 in a Be^=3 ion

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it uses the borhr theory and i have a answer but idk if it's right

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Did you use Rydberg's formula to solve for lambda (wavelength)?

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yes i got -2.18 x 10^-18J (25/25)-(16/25)= -0.64x 10^-18J

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The Rydberg's # we were given is 2.18x10^-18
and the formula is -R(z^2/n^2)

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So if you got that, wavelength=h(Plank's constant)/frequency, just solve for frequency.

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Wait, is that right? Or does it equal speed over frequency? It's been a while since I've been in chem.

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But i have the amount of energy but what would be the momentum to plug into the planks constant

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Momentum? It's a constant, why do you need to plug something into it?

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ok so i think that energy is proportionate to frequency. I
'm kinda confused.

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