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6 Radioactivity

6 Radioactivity

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Question 41

In an experimental nuclear fusion reactor, a deuterium nucleus and a tritium nucleus undergo fusion to produce a helium nucleus and a neutron.

deuterium+tritium→helium+neutron \text{deuterium} + \text{tritium} \rightarrow \text{helium} + \text{neutron} deuterium+tritium→helium+neutron
  • The total mass of the reactants (deuterium and tritium) before fusion is 8.35 × 10-27 kg.
  • The total mass of the products (helium and neutron) after fusion is 8.32 × 10-27 kg.

This difference in mass is converted into energy.

Calculate the percentage of the original mass that has been converted to energy. Give your answer to 2 significant figures.

[3]
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6 Radioactivity Questions

  1. GCSE
  2. /Physics
  3. /6 Radioactivity

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