Determine the half-life (in s) of a radioactive sample that contains 1.10 x 105 atoms of the radioactive nuclide and has an activity of 5.80 x 101 Bq.
Q: The nuclide 14C contains (a) how many protons and (b) how many neutrons?
A:
Q: A pure carbon archaeological artefact has an age of 20000 years and an activity of 6 counts/min.…
A: The objective of the question is to find the activity of a pure carbon archaeological artefact at…
Q: A sample of radioactive material is obtained from a very old rock. The activity of the rock over a…
A: Given that: The equation of the activity of a radioactivity substance is A=A0e-λt The slope of the…
Q: After 1.82 days, the activity of a sample of an unknown type radioactive material has decreased to…
A:
Q: The isotope cobalt-60 has a nuclear mass of 59.933820 u. Calculate the mass defect of cobalt-60…
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: A sample of radioactive material contains 1x 1014 atoms and has an activity of 6.3 x 1011 Bq. What…
A:
Q: Your company develops radioactive isotopes for medical applications. In your work there, you measure…
A: We know, the activity equation is given by A=A0e-λt From the table it is seen that A0=20,000 At…
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: The radioactive isotope 234pa has a half-life of 6.70 h. A sample containing this isotope has an…
A:
Q: Technetium-99 is an unstable isotope. Given a half-life of 8.01 hours, what is the activity (in…
A: Determine the decay constant.
Q: The mass of the 16O nuclide is 15.994915 u. What is the total binding energy for this nucleus
A: Given Atomic number is Z=8 Mass number is A=16 Mass of the 16O nuclide is M=15.994915 u
Q: radioactive sample initially undergoes 12.0×10^4 decays/s. Twenty-four hours later, its activity is…
A:
Q: A radioactive sample has an activity of 250 Bq and contains 6.52×10¹³ radioactive nuclides. Estimate…
A: The rate at which this decay takes place in a given sample of radioactive material is called its…
Q: opper-63 has a nucleus mass of 62.92959 u. Its atomic number is 29, and its atomic mass number is…
A:
Q: A radioactive sample studied in a lab is found to have a half-life of 48 hours. If the initial…
A: Radioactive decay is the process by which an unstable nucleus becomes stable. The half-life for 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: Use the following data to calculate the binding energy per nucleon in MeV of the Rhodium-103 nuclide…
A:
Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 3.30 ✕ 1011 Bq when…
A: Given. N = 1.7*10¹⁵ dN/dt = 3.3*10¹¹ Formula used N(t) = N⁰*0.5t/T Where T is half life
Q: A 10 g sample of a radioactive element took 12 days to reduce into 1 g. Calculate the half-life and…
A: Some configurations of protons and neutrons inside a nucleus are unstable. When an atomic nucleus is…
Q: A scientist is studying a 2.234 g sample of thorium-229 (t1/2 = 7340 yrs) in a laboratory. (a)…
A: The mass of the thorium is 2.234 g.The half-life time of the thorium is 7340 years.
Q: radioactive source of a single nuclide emits 2.4 MeV neutrons at the rate of 2400 neutrons per…
A:
Q: A radioactive sample studied in a lab is found to have a half-life of 25 hours. If the initial…
A: Radioactive decay is the process by which an unstable atomic nucleus spontaneously emits particles…
Q: A nucleus of copper has an atomic mass of 64.93 u (with Z=29 and A=65). Considering that the mass…
A: Total binding energy of the nucleus is 552.89 Mev
Q: A 10 g sample of a radioactive element takes 16.21 mins to reduce into 6 g. Calculate the half-life…
A: Radioactive decay takes place when an unstable nucleus becomes stable. The instability arises due to…
Q: After 1.86 days, the activity of a sample of an unknown type of radioactive material has decreased…
A: The objective of this question is to find the half-life of a radioactive material given the time it…
Q: What is the activity of a sample of C that contains 6.7x1020 nuclei? The half-life of C is 5700…
A: Solution:In 5700 years 6.5 × 10202 nuclei decay will take place, thus we have:5700 yrs =…
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:
Step by step
Solved in 2 steps with 1 images
- A sample of radioactive material has a half-life of 12 hours. If the initial sample contained 6.2x10¹3 radioactive nuclides estimate the number of radioactive nuclides present in the sample after 5 hours.(a) At an initial time, a radioactive sample has an activity of 8.77x104 Bq. After 3.88 hours the activity is 5.35x104 Bq. (A) What is the half-life of the isotope? (B) What is the activity after an additional 3.88 hours? (A) (in s) OA: 6.426x103 OB: 9.317x103 oC: 1.351x104 OD: 1.959x104 OE: 2.840x104 OF: 4.119x104 OG: 5.972x104 (B) (in Bq) H: 8.660x104 OA: 1.387x104 OB: 1.845x104 OC: 2.454x104 OD: 3.264x104 OE: 4.341x104 OF: 5.773x104 OG: 7.678x104 OH: 1.021x105The half-life of radon-222 is about 3.823 days. (a) Determine the decay constant for radon-222. 2.1x10-65-¹ ✓ (b) What percentage of a sample remains undecayed after two weeks (1.21 x 106 s)? %
- Bq. Determine the half-life (in s) of a radioactive sample that contains 1.50 x 1015 atoms and has an activity of 6.60 x 101(a) At an initial time, a radioactive sample has an activity of 8.52x104 Bq. After 3.85 hours the activity is 5.42×104 Bq. (A) What is the half-life of the isotope? (B) What is the activity after an additional 3.85 hours? (A) (in s) OA: 2.285x103 (B) (in Bq) OA: 1.149x104 OB: 3.314x103 OB: 1.344x104 OC: 4.805x103 OC: 1.573x104 OD: 6.967x103 OD: 1.840x104 OE: 1.010x104 OE: 2.153x104 OF: 1.465x104 OG: 2.124x104 OF: OG: 2.519x104 2.947x104 OH: 3.080x104 OH: 3.448x104The activity of a particular radioactive nuclide falls from 1 × 1011 Bq to 2 × 1010 Bq in 10 hours. Calculate the half-life of the nuclide.