In a fission reaction of U-235 there was a release of 9.20x1011kJ of energy. What amount of mass in grams would have been lost?
Recall that c = 3x108 m/s.Select one of the options below as your answer:
A. 1.02 x 10-2
B. 1.02 x 101C. 1.02 x 109
D. 8.28 x 10-2
E. 8.28 x 1022

Question

In a fission reaction of U-235 there was a release of 9.20x1011kJ of energy. What amount of mass in grams would have been lost?
Recall that c = 3x108 m/s.Select one of the options below as your answer:
A. 1.02 x 10-2 
B. 1.02 x 101C. 1.02 x 109
 D. 8.28 x 10-2
 E. 8.28 x 1022

anonymous · Answer

too hard..?

anonymous · Answer

You need to take the equation E=mc^2 and solve for m. Since you are given E and c, simply rearrange the equation so you can find m, then plug in the values for E and c. 9.20x10^11/(3x10^8)^2 you will get 1.02x10^-5, which you do not have listed as an answer choice.

anonymous · Answer

oh nice job cmorse.

anonymous · Answer

I didn't know i could give out medals on other peoples answers. That's awesome. I'm new.:l