13. The nuclide Th234 (UX) is normally present in uranium compounds in secular equilibrium with its...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
13. The nuclide Th234 (UX₁) is normally present in uranium compounds in secular equilibrium with its parent U238, which has a half-life of 4.50 × 10⁰ years. If the formation of UZ is neglected, the UX1 decays with a half-life of 24.1 days to Pa234 (UX2), which decays with a half-life of 1.18 min into U234 (UII); the latter has a half-life of 2.50 X 105 years. Suppose that at time t = 0, all the Th234 from 100 gm of uranium is removed. Plot the activities (in rutherfords) of Th234 and Pa234 as functions of time for (a) a 10-min period, (b) a 10-day period. Discuss the kinds of equilibrium involved, if any. 12. Secular equilibrium. Answer 13. During a 10-min period, the activities of Th234 and Pa234 seem to be in secular equilibrium; but over a 10-day period, the Pa234 activity would de- crease with a half-life of 24.1 days, in transient equilibrium with the Th234. 14. The number of atoms N, of a given member of a radioactive series in secular equilibrium is related to the number of atoms N₁ of the parent substance by 13. The nuclide Th234 (UX₁) is normally present in uranium compounds in secular equilibrium with its parent U238, which has a half-life of 4.50 × 10⁰ years. If the formation of UZ is neglected, the UX1 decays with a half-life of 24.1 days to Pa234 (UX2), which decays with a half-life of 1.18 min into U234 (UII); the latter has a half-life of 2.50 X 105 years. Suppose that at time t = 0, all the Th234 from 100 gm of uranium is removed. Plot the activities (in rutherfords) of Th234 and Pa234 as functions of time for (a) a 10-min period, (b) a 10-day period. Discuss the kinds of equilibrium involved, if any. 12. Secular equilibrium. Answer 13. During a 10-min period, the activities of Th234 and Pa234 seem to be in secular equilibrium; but over a 10-day period, the Pa234 activity would de- crease with a half-life of 24.1 days, in transient equilibrium with the Th234. 14. The number of atoms N, of a given member of a radioactive series in secular equilibrium is related to the number of atoms N₁ of the parent substance by
Expert Answer:
Related Book For
Posted Date:
Students also viewed these physics questions
-
The following exercises will guide you into building a simplified model of the Cathode Ray Tube's behavior. Please answer each question in your lab notebook. 1) The accelerating voltage V, which you...
-
Consider an average control chart for a known quality feature. Suppose this normally distributed feature has a sample size of five with a mean and standard error values of 74 and 0.0045 respectively....
-
Does ecological disturbance have an effect on plant species richness in an ecosystem? Species diversity can be measured by taking into account two (2) characteristics of the community being studied:...
-
In Exercises 1 through 22, find the critical points of the given functions and classify each as a relative maximum, a relative minimum, or a saddle point. f(x, y) = x 4 32x + y 3 12y + 7
-
The correlation coefficient, r, is related to the slope of best fit, b1, by the equation Verify this equation using the following data. rSSy) 2 4 7 2 14
-
The beta coefficient for Stock C is bC = 0.4, whereas that for Stock D is bD = _0.5. (Stock Ds beta is negative, indicating that its rate of return rises whenever returns on most other stocks fall....
-
Following is a TI-84 Plus display showing a 95% confidence interval for 1. a. What is the slope of the least-squares regression line? b. How many degrees of freedom are there? c. How many points are...
-
The 10-K of NIKE is reproduced in Appendix C. Required (a) What are the major sources of cash for the company, and what is it doing with that cash? (b) Were there any significant transactions in...
-
As the lecture asserts, and as the supplemental readings illustrate, gap analysis is an important tool for assessing, and thereby identifying means of improving, program or organizational...
-
The following selected accounts and their current balances appear in the ledger of Druid Hills Co. for the fiscal year ended May 31, 20Y8: Cash .......................................... $ 290,800...
-
11. Cite the differences in the tax remedies with respect to national taxes as provided by the National Internal Revenue Code and those that are available under the Local Government Code as regards...
-
Make a list of different ways that you can make money investing in real estate assets include common or traditional ways with non-traditional ways (think outside the box). What are important metrics...
-
23. The mass of a paper clip is approximately 1.1 x 106 kg 2.1 x 10 kg 3.1 x 103 kg 4.1 x 10 kg
-
Consider the following table Bond Bond A Bond B Bond C Bond D Bond E Bond F Maturity 2 Yr 2 Yr 5 Yr 5 Yr 10 Yr 10 Yr Coupon 4% 7% 4% 7% 4% 7% Frequency Annual Semi-Annual Annual Semi-Annual Annual...
-
make spoken word on any topic relevant to you. to be sure that it is meaty, include as many propositions with logical operators as you can. use a separate sheet of paper for your poem.
-
Consider the graph of y = f(x) below. 2 -1 0 -14 + 1 I +2 X (a) Find all values for which f(x) is discontinuous. (b) For each point in (a), describe where the 3-part definition fails. (c) Classify...
-
Divide and simplify, if possible. 5x+25 (x+5)2 4x-8 (x-2)
-
The vapor pressure of the liquid NH, is measured at different temperatures. The following vapor pressure data are obtained. Temperature, K P, mmHg 217.1 223.4 234.7 588.1 Calculate the enthalpy of...
-
The pressure-volume graph shows three paths in which a gas expands from an initial state A to a final state B. The change DUA(B in internal energy is the same for each of the paths. Rank the paths...
-
Review Conceptual Example 2 as background for this problem. One kind of slingshot consists of a pocket that holds a pebble and is whirled on a circle of radius r. The pebble is released from the...
-
Two converging lenses are separated by 24.00 cm. The focal length of each lens is 12.00 cm. An object is placed 36.00 cm to the left of the lens that is on the left. Determine the final image...
-
The adjusted trial balance of Marshall Ltd. at December 31, 2020. Requirements 1. Prepare Marshall Ltd.'s 2020 income statement, statement of retained earnings, and balance sheet. List expenses...
-
Fred's Catering Ltd. had the following selected transactions during May 2020: Requirements 1. Show how each transaction would be handled using the cash basis and the accrual basis, Under each column,...
-
The balance sheet at December 31, 2018, 2019) and 2020 and income statement for the years ended December 31, 2018, 2019, and 2020 for Ojibway Inc. include the following data: Requirements Use the...
Study smarter with the SolutionInn App