Uranium-238 decays into thorium-234.how do scientists explain why this happens

Correct

The nucleus is unstable.

Thanks,

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if you're asking what comes out, it's steam.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.