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4) Find the answer by using a calculator.
Ruben has to calculate the amount of rubidium-86 left over after 74.8 days. Its half-life is 18.7
days. He
started out with 57 grams.
Qt = Qi (1/2)^t/th

4 Find the answer by using a calculator Ruben has to calculate the amount of rubidium86 left over after 748 days Its halflife is 187 days He started out with 57 class=

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