jkunz7133 jkunz7133

30-05-2022
Chemistry

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If a rock sample originally contained 12 g of uranium 235, how much will be left after 2 half lives?

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Sergeystone Sergeystone

30-05-2022

Answer:

3 g

Explanation:

new mass = (1/2)^n * original mass

where n = number of half lives

(1/2) ^2 * 12

= 3 g

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