number 4 please

1. Determine the identity of element X in the following nuclear reactions a) 92238U24He+7?X b) 7?X24He+82206Pb c) 96244Cm+24He??X+11H+201n d) 92238U+2?X98246Cf+401n e) ???X+510B103257Lr+501n f) 2?X24He+81208Tl+00 2. Canadian (CANDU) nuclear reactors produce energy by nuclear fission of uranium-235. 01n+92235U3692Kr+56141Ba+301n If the molar enthalpy of fission for uranium-235 is 1.91010kJ/mol, how much energy can be obtained from the fission of 1.00kg of pure uranium-235? [2m] 3. In the Sun, hydrogen atoms undergo nuclear fusion to produce Helium and 1.7109kJ/mol of He. How much energy can be obtained from 1.00kg of helium? [2m] 4. Explain why, although the molar enthalpies of reaction of U-235 (fission) and He (fusion) are similar, their energy outputs per kilogram are so different