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3 years ago

8

The half-life of radioactive element krypton-91 is 10 seconds. if 16 grams of krypton-91 are initially present, how many grams a

re present after 10 seconds? after 50 seconds?

1 answer:

earnstyle [38]3 years ago

6 0

10 seconds = 8grams
then just divide by 2 another 4 times...
= 0.5grams after 50 seconds

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