Unit 2-4 Light & Bohr

[qwiz qrecord_id=”aglimme-Unit2-4″]

[q labels=”bottom”]Place the correct variables for the equation that relates the energy of a photon to planks constant and the frequency.

 

[l]E

[fx] No. Please try again.

[f*] Correct!

[l]h

[fx] No, that’s not correct. Please try again.

[f*] Good!

[l]c

[fx] This equation does not use c.

[f*] Correct!

[l]λ

[fx] This equation does not use λ.

[f*] Great!

[l]ν

[fx] No, that’s not correct. Please try again.

[f*] Correct!

[q labels=”bottom”]Place the correct variables for the equation that relates the energy of a photon to planks constant, the speed of light and the wavelength.

 

[l]E

[fx] No, that’s not correct. Please try again.

[f*] Correct!

[l]h

[fx] No, that’s not correct. Please try again.

[f*] Excellent!

[l]c

[fx] No, that’s not correct. Please try again.

[f*] Correct!

[l]λ

[fx] No, that’s not correct. Please try again.

[f*] Great!

[l]ν

[fx] This equation does not use ν.

[f*] Good!

[q]A bright violet line occurs at 435.8 nm in the emission spectrum of mercury vapor. What amount of energy, in joules, must be released by an electron in a mercury atom to produce a photon of this light?

[textentry minlength=”1″ use_dict=”false” use_terms=”false”]

[c]4.558•10-28J

[c]2.888•10-31J

[c]1.307•1011J

[c*]4.558•10-19J

[q]Heated lithium atoms emit photons of light with an energy of 2.961•10−19 J. Calculate the frequency of one of these photons.

[textentry minlength=”1″ use_dict=”false” use_terms=”false”]

[c*]4.469•1014 s-1

[c]1.491•106 s-1

[c]2.238•10-15 s-1

[c]1.962•10-52 s-1

[/qwiz]