The decay constant of 169Yb is 0.0217 days -1. Calculate its half life.
3.2 days |
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0.67 day |
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32 days |
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0.03 day |
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0.31 day |
The decay constant of 169Yb is 0.0217 days -1. Calculate its half life. 3.2 days 0.67...
An isotope has a half-life of 20.37 days. What is its decay constant in units of s-1?
CH 20 Half-Lives Question What is the half-life of ;, in days, if its decay constant is 9.94 x 10-75-11 Select the correct answer below: O 10.1 days O 8.07 days O 6.90 x 105 days 02.84 days
1. The half-life of 2211Na is 950 days. What is its decay constant? Express your answer in s?1. 2.The isotope 8737Rb decays by beta emission. What nucleus is produced?
The half-life of radon-222 is 3.823 days. What is the rate (decay) constant of this isotope? (Report your answer in standard notation. Only include the number in the answer box.) k = ?????? day-1
The decay constant of a given nucleus is 4.9×10?5 s?1 . What is its half-life? Answer is in hours.
What is the rate constant for the decay of Bi-210 if the isotope's half-life is 5.0 days? O A. 0.20 days? OB. 0.20 days O C. 0.14 days OD. 0.14 days?
Calculate decay constant of a radioactive materials of half-life (T1/2) equals to 100 ns?
The half-life of a certain radioactive element is 48.0 hr. a) Determine the decay constant in s^-1. b) If we started with 100.0 grams of this element, how much would be present in grams after 20.0 days? Work this out using the exponential decay formula.
The half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay constant for this isotope. (c) Convert 0.350 μCi to the SI unit the becquerel. (d) Find the number of 131I nuclei necessary to produce a sample with an activity of 0.350 μCi. (e) Suppose the activity of a certain 131I sample is 6.10 mCi at a given time. Find the number of half-lives the sample goes through in 40.2 d and the activity...
The half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. s (b) Calculate the decay constant for this isotope. s−1 (c) Convert 0.650 μCi to the SI unit the becquerel. Bq (d) Find the number of 131I nuclei necessary to produce a sample with an activity of 0.650 μCi. 131I nuclei (e) Suppose the activity of a certain 131I sample is 7.10 mCi at a given time. Find the number of half-lives the sample goes through in...