Question

In: Physics

Strontium-90 decays to Y-90 by beta decay with a half-life of 28 yrs. Y-90 decays by...

Strontium-90 decays to Y-90 by beta decay with a half-life of 28 yrs. Y-90 decays by beta decay-to Zircomium-90 with a half-life of 64 hrs. What is the composition of the original Strontium -90 sample after (a) 1 hr, (b) 10 yrs?

Solutions

Expert Solution

genius_generous answered 2 years ago
Next > < Previous

Related Solutions

Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years....
Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years. What is the age of a rock sample that contains 105.9 µg 87Rb and 7.9 µg 87Sr ? ____ years old Assume that no 87Sr was present when the rock was formed. The atomic masses are given in the table below: Nuclide Atomic Mass 87Rb 86.90919 87Sr 86.90888
Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years....
Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years. What is the age of a rock sample that contains 104.6 µg 87Rb and 7.1 µg 87Sr ? Assume that no 87Sr was present when the rock was formed. The atomic masses are given below: Nuclide Atomic Mass 87Rb 86.90919 87Sr 86.90888
The half-life for the alpha decay of 232U to form 228Th is 68.9 y. Suppose the...
The half-life for the alpha decay of 232U to form 228Th is 68.9 y. Suppose the energy of the alpha particle is 5.28 MeV and that 1.09 g of 232U, freed of any other radioactive materials, were placed in a calorimeter containing 49.1 g of water, initially at 22.9°C. Calculate the temperature the water would reach after 1.15 hour. Neglect the heat capacity of the calorimeter and heat loss to the surroundings. Take the specific heat of water to be...
​3816S decays by beta emission to 3817​Cl. This reaction has a half‐life of 2.87 hours. The...
​3816S decays by beta emission to 3817​Cl. This reaction has a half‐life of 2.87 hours. The 3817​Cl subsequently decays by beta emission to 3818​Ar. This reaction has a half‐life of 37.3 min. a) How much will remain of an initially pure sample of 3.5 mg 3816S after 9.35 hours? b) How many mg of 3817​Cl will be present after 9.35 hours? c) How many mg of 3818​Ar will be present after 9.35 hours?
Radioactive Decay Objective: to study the radioactive decay of materials. Understand the  concept of half life and...
Radioactive Decay Objective: to study the radioactive decay of materials. Understand the  concept of half life and randomness of the radioactive decay Run the case of H3 decay to He3: Go to “Multiple Atoms” tab Start with 80 atoms by clicking on the bucket. Start running and record the time when the number of H3 is changing to 40, 20, 10, and 5.This is accumulative time Repeat the above step 5 times and average them (below is an example of table...
a) Radon undergoes alpha decay with a half-life of 3.8 days. What is its decay constant...
a) Radon undergoes alpha decay with a half-life of 3.8 days. What is its decay constant in s-1? b) Sr -90 (A=90, Z = 38) decays via β- decay. Calculate the energy of the antineutrino (in keV) if the beta particle has a kinetic energy of 397 keV. Note - you can look the atomic masses up online. c) What is the average binding energy per nucleon for Argon-40 (A=40, Z = 18) in MeV/nucleon? Note - keep 4 significant...
Strontium 38Sr90 has a half-life of 29.1 yr. It is chemically similar to calcium, enters the...
Strontium 38Sr90 has a half-life of 29.1 yr. It is chemically similar to calcium, enters the body through the food chain, and collects in the bones. Consequently, 38Sr90 is a particularly serious health hazard. How long (in years) will it take for 99.9488% of the 38Sr90 released in a nuclear reactor accident to disappear?
If 13% of Americium decays in 7 hours, what is the half-life of Americium in hours?...
If 13% of Americium decays in 7 hours, what is the half-life of Americium in hours? Round your answer to 3 decimal places.
The Plutonium isotope 239Pu has a half-life of 24,000 years and decays by the emission of...
The Plutonium isotope 239Pu has a half-life of 24,000 years and decays by the emission of a 5.2 MeV alpha particle. Plutonium is not especially dangerous if handled because the activity is low, and the alpha radiation doesn’t penetrate the skin. However, there can be serious health concerns if the tiniest particles are inhaled and lodge deep in the lungs. This could happen following any kind of fire or explosion that disperses Plutonium as dust. a) (3 pts.) Soot particles...
The half-life of carbon-14 is 5730 years. Assume that the decay rate is proportional to the...
The half-life of carbon-14 is 5730 years. Assume that the decay rate is proportional to the amount. Find the age of a sample in which 10% of C-14 originally present have decayed. Select the correct answer. a. 950 years b. 1050 years c. 1150 years d. 850 years e. none
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT