In a fission reaction,a ²³⁵U nucleus captures a neutron.What energy is released if the products are ¹³⁹I,⁹⁵Y and two neutrons? (atomic masses: ²³⁵U,235.043 9;¹³⁹I,138.935 0;⁹⁵Y,94.913 4;neutron,1.008 67;and 1 u = 931.5 MeV/c²) A)123 MeV B)174 MeV C)199 MeV D)218 MeV

Question

Quizplus · Accepted Answer

The energy released in a fission reaction can be calculated using the mass defect and converting it to energy using E=mc². The mass defect is the difference between the mass of the reactants and the mass of the products. Calculate the total mass of the reactants (235.0439 + 1.00867) and the total mass of the products (138.9350 + 94.9134 + 2*1.00867). The mass defect is then converted to energy using 1 u = 931.5 MeV/c². The calculation gives approximately 174 MeV.

In a Fission Reaction,a 235U Nucleus Captures a Neutron

In a Fission Reaction,a ²³⁵U Nucleus Captures a Neutron