Answer to Question #331615 in General Chemistry for Jeff

Question

 Canadian (CANDU) nuclear reactors produce energy by nuclear fission of uranium-235. 

in + 235U → Kr + 14Ba + 3 in 

If the molar enthalpy of fission for uranium-235 is -1.9 x1010 kJ/mol, how much energy can be obtained from the fission of 1.00 kg of pure uranium-235? 

Answer 1

Moles of U-235:

1.00 x 1000 g / 235 g/mol = 4.255 mol

-1.9 x 10¹⁰ kJ/mol * 4.255 mol = 8.1 x 10¹⁰ kJ