Post Module Assessment Number 20

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ayushibanerjee06
Posts: 177
Joined: Thu Jul 11, 2019 12:16 am
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Post Module Assessment Number 20

Postby ayushibanerjee06 » Sat Oct 12, 2019 10:14 pm

Can someone explain what the answer is for #20?
If 1 million photons in the UV region are absorbed by a hydrogen gas sample how many electrons are excited to a higher energy level?
A. zero
B. 500,000
C. 1
D. 1 million

Is it D?

ishaa Diwakar 4E
Posts: 56
Joined: Wed Sep 11, 2019 12:17 am

Re: Post Module Assessment Number 20

Postby ishaa Diwakar 4E » Sat Oct 12, 2019 10:18 pm

Yes, it is D, because there is one electron that will be excited by every one photon (1:1 ratio).

ayushibanerjee06
Posts: 177
Joined: Thu Jul 11, 2019 12:16 am
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Re: Post Module Assessment Number 20

Postby ayushibanerjee06 » Sat Oct 12, 2019 10:53 pm

Thanks (:

Dakota Walker 1L
Posts: 58
Joined: Wed Sep 18, 2019 12:17 am

Re: Post Module Assessment Number 20

Postby Dakota Walker 1L » Sun Oct 13, 2019 5:20 pm

Because hydrogen has one electron for every H atom, the number of excited electrons will be equal to the number of excited hydrogen particles, which in this case is 1 million.


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