The isotope 2712Mg has a half-life of 9.46 min. Determine the time interval (in min) required for the activity of a sample of this isotope to decrease to 37.0% of its original value.  min

Q: Cesium-137 is radioactive and has a half life of 30. years. Calculate the activity of a 1.4 mg…

A: Given value--- half life time = 30 year . mass = 1.4 mg. We have to find---  Calculate the…

Q: After 1.82 days, the activity of a sample of an unknown type radioactive material has decreased to…

A:

Q: A radioactive isotope has a half-life of 72.0 min . A sample is prepared that has an initial…

A: (a) Initial radioactive nuclei

Q: The radioactive nuclide Plutonium-199 has a half-life of 43.0 min. A sample is prepared that has an…

A:

Q: An 1 g sample of a radioactive element takes 83.92 million years to reduce into 1 µg. Calculate the…

A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…

Q: Sodium-24 is a radioisotope used for examining circulation. a. Write a balanced nuclear equation for…

A: The radioactivity equation is  N = No12n where, No is the initial number of atoms, N is the atoms…

Q: A radioactive isotope has an activity of 9.27x104 Bq initially. After 3.30 hours the activity is…

A:

Q: The radioactive isotope 243 Am, with a half-life of 432 y, is the active element in many smoke…

A:

Q: A sample of a radioactive isotope with a decay constant of λ = 4.27 × 10-3 s-1. A sample of the…

A: we know activity R =λN where λ = decay constant  N = number of particle given  N = 2.68 × 1015…

Q: The iodine isotope ¹331 is used in hospitals for diagnosis of thyroid function. If 570 µg are…

A: You have posted a question with multiple sub-parts. But as per the guideline we are only be able to…

Q: Find the number of atoms in the sample after 10 days.

A:

Q: ox was found which stated to have contained an al s by weight of two metals A and B. These metals…

A:

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A:

Q: radiation lab orders 64 Ci of P-32. After 42.9 days the activity of the sample is 8.0 Ci. What is…

A:

Q: Mantles for gas lanterns are made of thorium, because it forms an oxide that can survive being made…

A:

Q: 53. A radioactive sample contains 3.50 µg of pure "C, which has a half-life of 20.4 min. (a) How…

A: Given data: Mass, m=3.50μg=3.5×10-6g Half-life, t12=20.4 min=20.4×60 s=1224 s

Q: The isotope 208Tl undergoes β decay with a half-life of 3.1 min.  How many minutes will it take for…

A:

Q: What is the half-life of an isotope that decays to 6.25% of its original activity in 60.2 h?

A:

Q: What is the half-life in days of a radioactive sample with 3.0x1015 atoms and an activity of 6.2x108…

A: In this problem, we are given the number of atoms in a radioactive sample (N = 3.0x10^15 atoms) and…

Q: The iodine isotope ¹331 is used in hospitals for diagnosis of thyroid function. If 570 µg are…

A: Since you posted a question of multiple subparts type questions, we will solve only the first three…

Q: A force F of magnitude 920 lb is applied to point C of the bar AB as shown. Determine both the x-y…

A: A force F of magnitude 920 lb is applied to point C of the bar AB as shown in the figure. We need to…

Q: A sealed box containing alloys of metal A and Metal B consisting of the same parts accordingly.…

A: We need to find the age of the alloy based on the given information.

Q: 32. În a number of successive decay processes i nucleus there is a net decrease in the proton number…

A: for an α decay process XZA→YZ-2A-4+α24for a β- decay processXZA→YZ+1A+e-+ν¯efor a β+ decay…

Q: 10. The radioactive isotope (82Sr) has a half-life of 25.4 days. A sample containing this isotope…

A: Given, The half-life of radioactive elements is 25.4 days The initial activity, R=4.50×108 Bq

Q: Iodine-131, a beta emitter, has a half-life of 8 days. A 2-gram sample of initially pure iodine-131…

A:

Q: he isotope C has a half-life of 20.4 min. Determine the time interval (in min) required for the…

A: Given that                 The half life (t1/2) = 20.4min                 Activity of a sample of…

Q: A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 0.92-kg…

A: The initial activity of the sample can be obtained as R0=0.92×103 g15.0 decays/min11g=1.38×104/min

Q: A patient with thyroid cancer is given a sample of lodine-131 which has a half-life of 8 days. If…

A:

Q: The half-life for the a decay of uranium 2U is 4.47 x 10° yr. Determine the age (in years) of a rock…

A:

Q: A reaction rate is the number of reactions per time unit in a medium irradiated by a neutron flux…

A:

Q: unlabeled container of radioactive material has an activity of 78 decays/min. Four days later the…

A:

Q: Question 1. Tritium has a a tritium sample will remain (a) after 5.00 yr?

A: GivenHalf Life for Tritium, t1/2=12.33 years

Q: A certain isotope has a half-life of 5.9 h and an atomic mass of 95.98 u. What will the activity in…

A:

Q: Iodine-131 is radioactive and has a half life of 8.04 days. Calculate the activity of a 7.4 mg…

A: Given value--- mass = 7.4 mg. half life time = 8.04 days.  We have to find---  Calculate the…