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Chemistry, 30.05.2021 14:00 danielboek

PLEASE HELP! 20 grams of a radioactive substance has a half life of 30 days

how much will be left after 150 days?

-1.25g

-2.50g

-0.63g

-0.31g

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PLEASE HELP! 20 grams of a radioactive substance has a half life of 30 days

how much wi...
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