Radioactive Carbon-11 has a half life of only 20.3 minutes and an atomic mass number of 11 u.
Calculate the activity of 3.58 g of Carbon-11.
Answer should be in Bq.
Radioactive Carbon-11 has a half life of only 20.3 minutes and an atomic mass number of...
Part A: Tritium is a radioactive isotope of the element hydrogen. Tritium has a half-life of 12.5 years. How many years would it take until only 3.22% of a sample remain? Answer should be in years. Part B: Radioactive Carbon-11 has a half life of only 20.3 minutes and an atomic mass number of 11 u. Calculate the activity of 3.58 g of Carbon-11. Answer should be in Bq.
Thank you so much for your help! Tin-129 is radioactive and has a half life of 2.23 minutes. Calculate the activity of a 6.9 mg sample of tin-129. Give your answer in becquerels and in curies. Be sure your answer has the correct number of significant digits Bq Ci Tin-129 is radioactive and has a half life of 2.23 minutes. Calculate the activity of a 6.9 mg sample of tin-129. Give your answer in becquerels and in curies. Be sure...
C-11 has a half-life of 20.3 minutes. What percentage of a C-11 sample will remain after 1 hour?
(d) Due to alpha decay, l mole of uranium-238 produces 2.96 106 alpha particles per second. Find the half-life, giving your answer in units of years. [5 marks] (e) The average mass of the atoms in a 0.100 kg block of pure carbon is 12.01 u. A small fraction of the atoms are radioactive, with a decay constant of 3.90 x 10-12s. If the activity of the carbon block is 97.8 Bq, calculate what fraction of the atoms are radioactive...
Radioactive Decay - Half-life and Activity 1 Radioactive decay - Half-life Time 0 1000 21 31 750 N 1.000.000 500,000 250,000 125,000 62,500 31.250 15.625 7813 3.506 1.953 977 51 6 500 7 BI . 101 250 125 0 tie 21.234.41516171819, 1012 Time in multiples of A radioactive sample's half-life is 30.2 years. 1 year = 365 days, 1 day = 24 hours, 1 hour - 60 minutes, 1 minute = 60 seconds (a) Find its decay constant in year...
Course Contents HOMEWORKS 10 (due... Half life and activity of a radioactive ... - Timer Notes Evaluate Feedback A radioactive isotope has an activity of 8.86x109 Bq initially. After 3.65 hours the activity is 5.94x109 Bq. What is the half-life of the Isotope? Suomt Answer Tries 0/20
Cobalt-60 is radioactive and has a half life of 5.26 years. Calculate the activity of a 4.5 mg sample of cobalt-60. Give your answer in becquerels and in curies. Round your answer to 2 significant digits. Bq ? Ci
The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 19. Bq. The activity in a similar-sized sample of fresh wood is measured to be 20. Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. years X 5 ?
The radioactive isotope, Fr - 223, has a half-life of 22 minutes. How many minutes will it take for an original sample to decay to 12.5% of its original amount? Express your answer in minutes. Enter only the numeric value of the answer without the units.
6. The half-life for the day of carbon-14 is 5.73x10 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 1.9x103 Bq. The acitivity in a similar- sized sample of fresh wood is measured to be 7.8x103 Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. rate kN kIn 2 (ICi-3.7x1010 Bq) 1/2