24. The atomic mass of 1H is 1.00782 amu and the mass of a neutron is 1.00866 amu. The binding energy for uranium-235(atomic mass 235.0439 u) is calculated to be ________ J/nucleon.
(A)
【用戶】面試倒楣鬼-22幸運上後西
【年級】大一下
【評論內容】 = (1.00782*92 +1.00866*143 - 235.0439) *(1.5*10-10J )=(92.719+144.238 -235.0439 )*(1.5*10-10J )= 1.91*(1.5*10-10J ) = 2.865*10-10J記憶單位:1amu的能量為(1.5*10-10J )然後題目問的是per nucleon (核子) =2.865*10-10J /235 = 1.219 * 10-12 J ~=(B)