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Question 10 The radioactivity of an element decreases by 67 percent in 320 days. (a) Determine the half-life of the element, rounded to a whole

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Question 10 The radioactivity of an element decreases by 67 percent in 320 days. (a) Determine the half-life of the element, rounded to a whole number: (b) Determine the number of days, rounded to a whole number, for a sample of 100 mg to decay to 54 mg

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