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In the combustion of methane, 810 kilojoules per mole (16 grams) is released. Compare this with the fission of uranium-235. The fission of uranium-235 releases 107 kilojoules per mole.

How much mass is lost in the fission reaction?


∆m = E/C2 (where c = 3.00 × 108 m/s)

Answer :

1.189 x 10⁻¹² kg is lost when uranium-235 undergoes fission

  • In a fission reaction, the nucleus of an atom is broken down into two smaller particles.
  • This is usually seen in heavy and unstable nuclei

The fission of uranium-235 releases 107 kJ/mol

We know that the formula for mass-energy equivalence is

                                              E=mc²

c = 3 x 10⁸ m/s

107000 J= m x  (3 x 10⁸ m/s)²

107000 = m x 9 x 10¹⁶

m = 1.189 x 10⁻¹² kg

In the fission of 1 mole of uranium,   1.189 x 10⁻¹² kg is lost in the reaction

Learn more about nuclear reactions here:

https://brainly.com/question/25387647

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