Explain the role of the moderator in a fission reaction.

GCSE

slows neutrons/reduces KE of neutrons so that neutrons can be absorbed by the U-235 nucleus to cause fission to release kinetic energy. (nuclear reactor and energy)

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pressure = 2.3 × 10^5 Pa temperature= 200K. At a constant volume, when the temperature increases to 300K what is the pressure in Pa?
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