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  3. material such as the isotope thorium234 disintegrates at a rate...

Question: material such as the isotope thorium234 disintegrates at a rate...

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material, such as the isotope thorium-234, disintegrates at a rate proportional to the amount currently present. If Q() is the amount present at time f, where f is asured in days, thenrQ, wherer0 is the decay rate, measured in day 1 (a) If 100 milligrams (mg) of thorium-234 decays to 82.18 mg in 1 week, determine the decay rate r. (Round the answer to five decimal places.) day 1 the absolute tolerance is +/-0.00001 SHOW HINT LINK TO TEXT (b) If 100 milligrams (mg) of thorium-234 decays to 82.18 mg in 1 week, find an expression for the amount of thorium-234 present at any time t. (Round the coefficients to five decimal places, if necessary.) Click here to enter or edit your answer

SHOW HINT LINK TO TEXT (c) If 100 milligrams (mg) of thorium-234 decays to 82.18 mg in 1 week, find the time required for the thorium-234 to decay to one-ninth its days. (Round the answer to one decimal place.) the absolute tolerance is +/-0.1 Click if you would like to Show Work for this question: Open Show Work 2. SHOW HINT LINK TO TEXT Question Attempts: 0 of 3 used SAVE FOR LATER SUBMIT ANSWER MapleNet 917 PIM

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