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Question 10 of 35 A first order reaction initially contains 1.25 x 1020 molecules. If the reaction has a half-life of 20.0 minutes, how many

Question 10 of 35 A first order reaction initially contains 1.25 x 1020 molecules. If the reaction has a half-life of 20.0 minutes, how many molecules remain unreacted after 80.0 minutes? a + +

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