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QUESTION ANSWER 13.5 years Nuclear decay occurs according to first-order kinetics. What is the half-life of...
0.323 minutes Nuclear decay occurs according to first-order kinetics. What is the half-life of polonium-218 if a sample decays from 55,4 g ko 31.7 g in 2.50 minutes? 0.220 minutes ООООО 4.55 minutes 3.10 minutes I DON'T KNOW YFI
QUESTION ANSWER 12.2 minutes Nuclear decay occurs according to first-order kineties. What is the half-life for mercury-206, which has a rate constant of 8.50 10 minutes? 5.89 minutes 11.8 minutes 8.15 minutes I DON'T KNOW YET
Question 1: Answer the following questions regarding half-lives. Assume first-order half life kinetics (2 pts total). A. The half-life of Co-60 is about 5.25 years. Starting with a 42 g sample, how much remains after 21.0 years have passed (1 pt)? B. The Spider that bit Miles Morales secretes an unknown radioactive chemical that decays via first order kinetics. Originally 27.0 mg, only 5.3 mg remains after 32 days. What is this compound's half-life (1 pt)?
The decay of radioactive cadmium follows first-order kinetics. A sample of radioactive cadmium has a half life of 15 days. If you have a sample that originally weighed 40 g and later weighs 2.5 g, how much time elapsed between the initial and final masses? A. 45 days B. 600 days C. 60 days D. 100 days
The decay of carbon-14 is first order with a half life is 5696 years. How much of 1.1573 g sample would remain after 8763 years?
All radioactive decay processes follow first-order kinetics. The half-life of a gamma producing radioactive isotope is 2.4 hours. This isotope is used in a medical scan and enough of the isotope is given such that a heart scan can be done? If 0.75 ng of the isotope is administered, how ng of the isotope remains in the patient after 3.5 days?
PS2.7 The half-life for the (first-order) radioactive decay of 14C is 5730 years. An archaeological sample contained wood that had only 69 percent of the 14C found in living trees. What is its age?
The decay of radioactive cadmium follows first-order kinetics. A sample of radioactive cadmium has a half life of 15 days. If you have a sample that originally weighed 40 g and later weighs 2.5 g, how much time elapsed between the initial and final masses? Given the following reaction: 2A (g) ↔ B (g) + C (g) ∆H˚ = +27 kJ K = 3.2 x 10-4 Which of the following would be true if the temperature were increased from 25˚C...
the half life for radioactive decay (a first order process) of plutonium- 239 is 240,000 years. How many years does it take for one mole of this radioactive material decay until just one atom remains?
a)For a first order decay of [A], if 188 mg remains of an initial sample of 1.3737 g after 516 min, what is the half life (in minutes)? b)The decay of carbon-14 is first order with a half life is 5576 years. How much of 1.4376 g sample would remain after 9190 years? c)The decay of cesium-135 is first order with a half life is 3.0 million years. How long (in years) would it take for a 0.9798 g sample...