Estimating the energy released in fission

[Fixxxer125]

Hi
I have been asked in a past exam paper to estimate the energy released by the fission of one ²³⁵U nucleus. I am given the mass of a ²³⁵U nucleus and also ¹⁴¹Cs nucleus and ⁹³Rb nucleus in the 'Useful constants and formula' section of the exam so I wondered if I had to use these, although obviously 141 and 93 do not sum to 235 so I wondered if there was a method to estimate the energy released by a fission without using mass differences etc, like if you just used an estimate of the energy released per nucleon in fission or something? Many Thanks

 

[AdrianTheRock]

Did the 'Useful constants and formulae' also contain the mass of the neutron? ;)

 

[Fixxxer125]

Ah yea so do you add the neutron mass to the Rb and Cs nuclei and make this the products and calculate the mass deficit this way?