# 4. The remnants of an ancient fire in a cave in Africa showed a 614decay rate of3.9counts per minute per gram of carbon. If the decay rate in C-14 in freshly cut wood,is 13.6 counts per minute per gram of carbon, how many years ago did the campfireoccur?Q1. As part of the solution in PROBLEM # 4, what is the value of In (A0/A1)A. 1.24909323B. 1.24909324C. 1.24909325D. 0.669248664 count/min.aram of CarbonE. 0.669248665 count/min.aram of CarbonF. 1.24909324 count/min.gram of CarbonQ2. The FINAL ANSWER to PROBLEM # 4А. 1.03 X 102 yearsВ. 1.03 х 103 yearsС. 1.03 х 104 yearsD. 1.03 X 105 yearsE. 10323 monthsF. 10323 days

Radioactive decay is a first order reaction. The integrated rate law for first order reaction is as…

Answered: # 4. The remnants of an ancient fire in…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The ratio of C-14 to C-12 in a piece of wood from an archeological site was found to be only 0.354 of what it is in a piece of wood taken from a tree today. In years, what is the age of the wood based on this C-14 measurement? The half-life of C-14 is 5730 years. Provide answer rounded to the nearest year but do not put units in the answer box. Your Answer: SU Your Answer
If a tree dies and the trunk remains undisturbed for 1.620 × 10* years, what percentage of the original 14C is still present? (The half-life of 14C is 5730 years.) 4 esc F2 @ 2$ % & 4 5 8 Q W Y tab A F G caps lock C V N shift エく0 H %# 3
A chemist determines that a sample of petrified wood has a carbon-14 decay rate of 6.00 countsper minute per gram. What is the age of the piece of wood in years? The decay rate of carbon-14in fresh wood today is 13.6 counts per minute per gram, and the half-life of carbon-14 is 5730years.
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The remnants of an ancient fire in a cave in africa showed a 146C decay rate of 3.9 counts per minute per grams of carbon. if the decay rate in C-14 in freshly cut wood, is 13.6 counts per mintue per gram of carbon, how many years ago did the campfire occur?
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Fluorine-18, which has a half-life of 110 minmin, is used in PET scans. 2) If 120. mgmg of fluorine-18 is shipped at 7:00 A.M., how many milligrams of the radioisotope are still active when the sample arrives at the radiology laboratory at 4:10 P.M.?
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The half-life of 14C is 5730 years, and the current decay rate in living organisms is 14.3 disintegrations per minute per gram of carbon (d.p.m./g C). What is the age (in years BP) of an artifact found to have a decay rate of 4.75 d.p.m/g C in 2013? IMPORTANT: When entering your answer: • Enter the number only (no units) • Do not leave any spaces • Report your number to the tens column (regardless of the significant figures) Correctly round your answer to the tens column (margin of allowed error is only ± 10, so always use un-rounded numbers in your calculations) Examples: 12340 or 5670 (include the zero in the units column, Canvas will add a comma for you)
The remnants of an ancient fire in a cave in Africa showed a c decay rate of 3.9 counts per minute per gram of carbon. If the decay rate in C-14 in freshly cut wood, is 13.6 counts per minute per gram of carbon, how many years ago did the campfire occur? 4. 5. A rock contains 0.257 mg of Pb-206 for every milligram of U-238.The half-life for the decay of U-238 to Pb-206 is 4.5 x 10°. How old is the rock?
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