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Find the missing value for the radioactive isotope. (Round your answer to two decimal places.) Half-life Initial Amount After Isotope (years) Quantity 1000 Years 239Pu 24,100 ||0.90 X 90.9 g

Find the missing value for the radioactive isotope. (Round your answer to two decimal places.) Half-life Initial Amount After Isotope (years) Quantity 1000 Years 239Pu 24,100 ||0.90 X 90.9 g

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter18: Nuclear Reactions
Section: Chapter Questions
Problem 72QAP
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Find the missing value for the radioactive isotope. (Round your answer to two decimal places.) Half-life Initial Amount After Isotope (years) Quantity 1000 Years 239pu 24,100 0.90 X 9 0.9 g
Transcribed Image Text:Find the missing value for the radioactive isotope. (Round your answer to two decimal places.) Half-life Initial Amount After Isotope (years) Quantity 1000 Years 239pu 24,100 0.90 X 9 0.9 g
After discontinuing all advertising for a tool kit in 2010, the manufacturer noted that sales began to drop according to the model 500,000 S = 1+ 0.1ekt where S represents the number of units sold and t represents the year, with t = 0 corresponding to 2010 (see figure). In 2013, 300,000 units were sold. 500 000 400 000 300 000 200 000 100 000 t 2 4 6 8 10 12 (a) Use the graph to estimate sales in 2021. (Round your answer to the nearest whole number.) S = units sold (b) Complete the model by solving for k. (Round your answer to three decimal places.) k = (c) Use the model to estimate sales in 2021. (Round your answer to the nearest whole number.) S = units sold
Transcribed Image Text:After discontinuing all advertising for a tool kit in 2010, the manufacturer noted that sales began to drop according to the model 500,000 S = 1+ 0.1ekt where S represents the number of units sold and t represents the year, with t = 0 corresponding to 2010 (see figure). In 2013, 300,000 units were sold. 500 000 400 000 300 000 200 000 100 000 t 2 4 6 8 10 12 (a) Use the graph to estimate sales in 2021. (Round your answer to the nearest whole number.) S = units sold (b) Complete the model by solving for k. (Round your answer to three decimal places.) k = (c) Use the model to estimate sales in 2021. (Round your answer to the nearest whole number.) S = units sold
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