Question

A nuclear reaction gives off a total of 10^17 joule energy. How much mass is spent in the process

Answer 1

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Answer 2

we have E=mc^ 2        [c= 3 x 10 ^8  m/s ]

m= E/c ^2    

   = 10^17/(3 x 10 ^8) ^2

    =1.11 kg