a rock is going to be analyzed for its radioactive isotope contents, x and y. X...
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rock is going to be analyzed for its radioactive isotope contents,
x and y. X...
Chapter 2 Fundamental Concepts 77 c. Your rock contains Iparent isotope A and daughter isotope B....
Chapter 2 Fundamental Concepts 77 c. Your rock contains Iparent isotope A and daughter isotope B. Geochron Laborato- ries dates the rock specimen at 500 million vears old. What is the hall-life of isotope A? d. Your rock contains a parent isotope Sand daughter isotope 7. Geochron Laboratories dates the rock specimen at 200 million vears old.'What is the half-life of isotope S? Geochron has also told you that one of its lab technicians split the rock in half and...
Radioactive decay occurs when a radioactive isotope ("parent" isotope) gradually transforms into ...
Radioactive decay occurs when a radioactive isotope ("parent" isotope) gradually transforms into a radiogenic isotope ("daughter" isotope) over time. This process is modeled by the following function: where r is the ratio of parent to daughter atoms, t is time and τΗ is called the halflife. The following table shows several parent-daughter pairs along with their half-lives. Daughter N14 Srs7 Ar4o Pb206 Pb207 Half-Life (years) 5730 48.8 x 109 1.3 x 109 4.6 x 109 0.7 x 10 arent Rbs7...
A sample of rock is found to have a parent-to-daughter isotope ratio of 1:3. Assume all...
A sample of rock is found to have a parent-to-daughter isotope ratio of 1:3. Assume all the isotope in the original rock was parent isotope and that the half-life of the parent isotope is 5 million years. What is the age of the rock? a) less than 5 million years old b) 5 million years old c) 10 million years old d) 15 million years old e) 20 million years old
Carbon 14, (14^, 6 C ) is a radioactive isotope of carbon that has a half-life...
Carbon 14, (14^, 6 C ) is a radioactive isotope of carbon that has a half-life of 5,730 years. If an initial sample contained 1,000 14C nuclei, how many would still be around after 22,920 years?
1. 1. Iodine-131 is a radioactive isotope. After 8.00 days, 50.2% of a sample of 131I remains. Wh...
1. 1. Iodine-131 is a radioactive isotope. After 8.00 days, 50.2% of a sample of 131I remains. What is the half-life of 131I? 2. The half-lives of different radioisotopes are given in the table below. If the initial amount of potassium-44 is 9.2 g, how much potassium-44 is left in the body after 44 minutes? 2. 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 59.9 g of 32P, how much 32P was present...
Modeling radioactive decay in pennies MODELING RADIOACTIVE DECAY WITH PENNIES ADVANCED STUDY ASSIGNMENT MODEL 2: RADIONUCLIDE...
Modeling radioactive decay in pennies
MODELING RADIOACTIVE DECAY WITH PENNIES ADVANCED STUDY ASSIGNMENT MODEL 2: RADIONUCLIDE HALF-LIFE The time required for half of a sample of a radionuclides (radioactive isotopes) to decay is called the half-life (units of time). Table 2 below illustrates the half-lives of several radioisotopes and the Table 2: Half-lives of some Radioisoto barium-131 carbon-14 chromium-51 cobalt-60 iodine-131 uranium-238 Radiation Half-life 11.6 days 5730 yrs 27.8 days 5.3 yrs 8.1 days 4.47. 109 yr Application detection of...
A) According to the data, what are the approximate half-lives of the hypothetical elements A, B,...
A) According to the data, what are the approximate half-lives of
the hypothetical elements A, B, C, and D?
B) Which of the hypothetical substances would be the most
harmful to living organisms? Why?
C) What part of an original isotope's number of atoms remains
after two half-lives?
D) After three half-lives of an isotope, 1 billion (one-eighth)
of the original isotope's atoms still remain in a certain amount of
this element. How many atoms of the daughter product would...
You have 360 million parent atoms of a radioactive isotope. If time passes and you end...
You have 360 million parent atoms of a radioactive isotope. If time passes and you end up with ____ parent atoms and ____ daughter atoms and the half-life is 2,500 years old. How old is the sample? A. 315,000,000 ; 45,000,000 ; 7,500 years B. 11,250,000 ; 348,750,000 ; 12,500 years C. 270,000,000 ; 90,000,000 ; 2,500 years D. 5493 ; 359,994,507 ; 10,000 years
4. An analysis of a mineral in Rock Sample B-273 reveals that only 6.25% of the...
4. An analysis of a mineral in Rock Sample B-273 reveals that only 6.25% of the original parent radionuclide carbon-14 remains. A) What is the stable daughter isotope we would also find? B) How many half-lives have elapsed in Rock Sample B-2737 C) How old is Rock Sample B-273? Be sure to show your work. 5. An analysis of a mineral in Rock Sample C-451 reveals that 75% of the original parent radionuclide uranium-238 remains. A) What is the stable...
The radioactive isotope Cs-137 has a half-life of 30 years. Starting with 1.0 mg of Cs,...
The radioactive isotope Cs-137 has a half-life of 30 years. Starting with 1.0 mg of Cs, how much would remain after 90 years?
Chapter 2 Fundamental Concepts 77 c. Your rock contains Iparent isotope A and daughter isotope B. Geochron Laborato- ries dates the rock specimen at 500 million vears old. What is the hall-life of isotope A? d. Your rock contains a parent isotope Sand daughter isotope 7. Geochron Laboratories dates the rock specimen at 200 million vears old.'What is the half-life of isotope S? Geochron has also told you that one of its lab technicians split the rock in half and...
Radioactive decay occurs when a radioactive isotope ("parent" isotope) gradually transforms into a radiogenic isotope ("daughter" isotope) over time. This process is modeled by the following function: where r is the ratio of parent to daughter atoms, t is time and τΗ is called the halflife. The following table shows several parent-daughter pairs along with their half-lives. Daughter N14 Srs7 Ar4o Pb206 Pb207 Half-Life (years) 5730 48.8 x 109 1.3 x 109 4.6 x 109 0.7 x 10 arent Rbs7...
Modeling radioactive decay in pennies
MODELING RADIOACTIVE DECAY WITH PENNIES ADVANCED STUDY ASSIGNMENT MODEL 2: RADIONUCLIDE HALF-LIFE The time required for half of a sample of a radionuclides (radioactive isotopes) to decay is called the half-life (units of time). Table 2 below illustrates the half-lives of several radioisotopes and the Table 2: Half-lives of some Radioisoto barium-131 carbon-14 chromium-51 cobalt-60 iodine-131 uranium-238 Radiation Half-life 11.6 days 5730 yrs 27.8 days 5.3 yrs 8.1 days 4.47. 109 yr Application detection of...
A) According to the data, what are the approximate half-lives of
the hypothetical elements A, B, C, and D?
B) Which of the hypothetical substances would be the most
harmful to living organisms? Why?
C) What part of an original isotope's number of atoms remains
after two half-lives?
D) After three half-lives of an isotope, 1 billion (one-eighth)
of the original isotope's atoms still remain in a certain amount of
this element. How many atoms of the daughter product would...
4. An analysis of a mineral in Rock Sample B-273 reveals that only 6.25% of the original parent radionuclide carbon-14 remains. A) What is the stable daughter isotope we would also find? B) How many half-lives have elapsed in Rock Sample B-2737 C) How old is Rock Sample B-273? Be sure to show your work. 5. An analysis of a mineral in Rock Sample C-451 reveals that 75% of the original parent radionuclide uranium-238 remains. A) What is the stable...
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