so option D is correct.
Isotope X has a half-life of 9.30 years. How long will it take for a 51.4...
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 ?
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...
A certain radioactive nuclide has a half life of 44.3 years. How long does it take for 87.5% of a sample of this substance to decay? years
A certain radioactive nuclide has a half life of 74.8 years. How long does it take for 87.5% of a sample of this substance to decay? ___years?
V Question 5 3.03 pts Suppose a radioactive isotope has a half-life t% = 99.1 hr. How long will it take for a sample of the isotope to decay to 3.0% of its original activity? a. 218 hr b. 0.0354hr c. 348 yr d. 297 hr e. 501 hr O a Ob Ос Question 6 3.03 pts A radioactive isotope has a half-life, t% = 27.3 yr How long will it take for a 3.27 mCi sample of this isotope...
An isotope of cesium (Cesium-137) has a half-life of 30 years. If 1.0 mg of cesium-137 disintegrates over a period of 90 years, how many mg of cesium-137 would remain? 14. Thallium-208 has a half-life of 3.053 min. How long will it take for 120.0g to decay to 7.500 15. Element-106 has a half-life of 0.90 seconds. If one million atoms of it were prepared, how many atoms would remain after 4.5 seconds? 16. A 2.5 gram sample of an...
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...
Sr-90 has a half-life of 29.1 years. How long will it take for the activity of a Sr-90 sample to decay from 5.3 times 10^3 dpm (disintegrations per minute) to 3 times 10^2 dpm? The half-life of a radioisotope is 3 d. What percent remains after 1 week?
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?
The half life of cobalt 60 is 5.3 years. How long will it take a 4.8g sample of Co60 to decay until only 1.6g of Co60 remains in the sample?