# math

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in 2001 it was estimated that 189 kg of plutonuim still remained. the half life of this plutonuim is 24,000 years. how much will be present in 24,000 years from 2001? please help

• math -

duh - half as much (one half-life)

• math -

You have to cut it in half. So it will be 94.5 kg.

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