An unknown radioactive element decays into non-radioactive substances. In 760 days the radioactivity of a sample decreases by 77 percent. (a) What is the half-life of the element? half-life: (days) (b) How long will it take for a sample of 1
An unknown radioactive element decays into non-radioactive substances. In days the radioactivity of a sample decreases by percent.
(a) What is the half-life of the element?
half-life: (days)
(b) How long will it take for a sample of mg to decay to mg?
time needed: (days)
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An unknown radioactive element decays into non-radioactive substances. In 760 days the radioactivity of a sample decreases by 77 percent. (a) What is the half-life of the element? half-life: (days) (b) How long will it take for a sample of 1
(2 points) An unknown radioactive element decays into non-radioactive substances. In 520 days the radioactivity of...
(2 points) An unknown radioactive element decays into non-radioactive substances. In 520 days the radioactivity of a sample decreases by 63 percent. (a) What is the half-life of the element? half-life: (days) (b) How long will it take for a sample of 100 mg to decay to 84 mg? time needed: (days)
Please solve a) and b) correctly
An unknown radioactive element decays into non-radioactive substances. In days the radioactivity of a sample decreases by percent.(a) What is the half-life of the element?half-life:____________ (days)(b) How long will it take for a sample of mg to decay to mg?time needed:___________ (days)
How long will it take a sample of radioactive substance to decay to half of its...
How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t) = 200e^-0.131t, where t is the time in years? Roud to the nearest hundredth year.
231 A 60 mg sample of a radioactive isotope decays to 50 mg after 4.7 days....
231 A 60 mg sample of a radioactive isotope decays to 50 mg after 4.7 days. a) Determine the half-life. b) How long will it take for the amount of the isotope to decrease to 20 mg?
Indium-116 is radioactive and has a half life of 14.10 seconds. How long would it take...
Indium-116 is radioactive and has a half life of 14.10 seconds. How long would it take a sample to decay from 7.70 mg to 900. g. Round your answer to 2 significant digits. x 5 ? O NUCLEAR AND ORGANIC CHEMISTRY Writing the equation for a typical radioactive decay The sodium-22 nuclide radioactively decays by positron emission. Write a balanced nudear chemical equation that describes this process 0- x Y ? 5 Explanation Check © 2020 MOGE AR Type here...
How long will it take a sample of radioactive substance to decay to half of its...
How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t) = 250e - 223, where t is the time in years? Round your answer to the nearest hundredth year. A) 3.11 yr B) 55.75 yr 24.76 yr D) 27.87 yr
Questions 3.03 Suppose a radioactive isotope has half-life-99.11. How long will take for a sample of...
Questions 3.03 Suppose a radioactive isotope has half-life-99.11. How long will take for a sample of the Isotope to decay to 3.0% of its originaltivity? a 2181 b. 0.0354h C348 yr d. 297 h e. 501 he Oь Od Od O. Question 303 A radioactive stope has halte-273 How long will be for 3.27 mmple of the Isotope to decay to 0.351 CIT 00817 y 382 y 133 y d. 87.9 y 6.60.9 y O. Оe Question 7 3.03 pts...
Radium-226 is radioactive and has a half life of 1600. years. How long would it take...
Radium-226 is radioactive and has a half life of 1600. years. How long would it take a sample to decay from 8.80 mg to 3.50 mg. Round your answer to 2 significant digits. years x 5 ?
The half-life of a radioactive isotope is 220 d. How many days would it take for...
The half-life of a radioactive isotope is 220 d. How many days would it take for the decay rate of a sample of this isotope to fall to 0.47 of its initial rate?
lodine 131 has a half life of 8 days and decays by a first order process (as is always the case for radioactive decay)
lodine 131 has a half life of 8 days and decays by a first order process (as is always the case for radioactive decay). How much of a 46 gram sample of iodine 131 will remain after 8 days? Report your answer in grams.
(2 points) An unknown radioactive element decays into non-radioactive substances. In 520 days the radioactivity of a sample decreases by 63 percent. (a) What is the half-life of the element? half-life: (days) (b) How long will it take for a sample of 100 mg to decay to 84 mg? time needed: (days)
231 A 60 mg sample of a radioactive isotope decays to 50 mg after 4.7 days. a) Determine the half-life. b) How long will it take for the amount of the isotope to decrease to 20 mg?
Indium-116 is radioactive and has a half life of 14.10 seconds. How long would it take a sample to decay from 7.70 mg to 900. g. Round your answer to 2 significant digits. x 5 ? O NUCLEAR AND ORGANIC CHEMISTRY Writing the equation for a typical radioactive decay The sodium-22 nuclide radioactively decays by positron emission. Write a balanced nudear chemical equation that describes this process 0- x Y ? 5 Explanation Check © 2020 MOGE AR Type here...
How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t) = 250e - 223, where t is the time in years? Round your answer to the nearest hundredth year. A) 3.11 yr B) 55.75 yr 24.76 yr D) 27.87 yr
Questions 3.03 Suppose a radioactive isotope has half-life-99.11. How long will take for a sample of the Isotope to decay to 3.0% of its originaltivity? a 2181 b. 0.0354h C348 yr d. 297 h e. 501 he Oь Od Od O. Question 303 A radioactive stope has halte-273 How long will be for 3.27 mmple of the Isotope to decay to 0.351 CIT 00817 y 382 y 133 y d. 87.9 y 6.60.9 y O. Оe Question 7 3.03 pts...
Radium-226 is radioactive and has a half life of 1600. years. How long would it take a sample to decay from 8.80 mg to 3.50 mg. Round your answer to 2 significant digits. years x 5 ?
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