Question

4. What sort of decay would you predict for l-130? (alpha, beta, positron) 5. Calculate the quantity of energy released neutron into barium-142 and krypton- culate the quantity of energy released when one atom of uranium-235 is split by the impact of a into barium-142 and krypton-92 releasing one additional neutron. Then calculate the antity of energy released when one gram of uranium-235 undergoes fission in the same way. 23U + In Ba + % Kr + 2n Atomic masses: 23 U 235.04 amu Ba 141.92 amu 91.92 amu 1.0087 amu

Answer 1

Beta decay 92 Ba calculate Mass defect Mars de To tal Mass(Reactont)- T.M ( Prodeuct) defect =(235.04 + 1.0087) - (141.92t 91.92 + 2X1.0087) 236.0487 235.8574 %3D 1913 qmy 7amu = 1 66 x (0-27 kg •1913 x1 66 x lo - 27 kg •1913 a mu= Energy= (om)c² (3710?)² •1913 x1-66X 1027 11 2 85802 2 x 10 %3D I) for uranium. 2 3 sOug conteins contains 23 atom 6.022 x10 6.022 x1023 atoms 235.OH. for for 19/ 2.85 80 22x101 -11 6.022x10 x 2.858022x10 atom energy seleased= 23 6.022x1o atoms 23 5 O4 235.04 7.322587 x 10