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Before a nuclear reaction, there is 0.0100 kg of uranium. After the nuclear reaction, there is 0.0090 kg of uranium. How much energy was released?  (h = 6.63 × 10^-34 J • s)

 May 10, 2020
 #1
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Is there a formula or thereom that we can use?

 May 10, 2020
 #3
avatar+1982 
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there was no formula but I actually ended up finding the answer and the guest below was as well correct.thank you for your help!

jjennylove  May 11, 2020
 #2
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+1

Isn't this just E = Mc^2

 

0.01  -  0.009 =0.001 kg - loss in Mass

E = 0.001  x  299,792,458^2 = 89,875,517,873,681.764 =8.99  x  10^13 Joules

Note: I don't think you need Planck's constant in this calculation. It is generally used to calculate the energy of a photon of radiation when its frequency is known.

 May 10, 2020
 #4
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0

yes that was correct! thank yousmiley

jjennylove  May 11, 2020

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