Interpretation:
The age of wooden artifact should be determined.
Concept introduction:
Activity is defined as the product of rate constant and number of atoms. It is also defined as the rate of decay or expresses number of atoms decays in unit time.
The mathematical expression is given by:
Where, A = activity, k = first order rate constant and N = number of radioactive nuclei.
Activity can be expressed in following units:
1 Bq = 1 atom/s
1 Ci = 3.700 × 1010 atoms/s
The relation between half-life and first order rate constant is given by:
Where, k = first order rate constant and
The prediction of the age of organic material is based on the rate of decay of carbon-14. Carbon-14 is an isotope of carbon which is released in the atmosphere in the form of interaction of neutrons from cosmic radiation with ordinary nitrogen atoms.
The intake of radioactive carbon stops when plant or animal dies. The reaction is given as:
The half-life of radioactive decay of carbon-14 is 5730 years. The activity of sample is directly proportional to the amount of C-14. The mathematical expression is given by:
Where,
t= age of the sample

Trending nowThis is a popular solution!

Chapter 18 Solutions
EBK CHEMISTRY: PRINCIPLES AND REACTIONS
- A mixture of C7H12O2, C9H9OCl, biphenyl and acetone was put together in a gas chromatography tube. Please decide from the GC resutls which correspond to the peak for C7,C9 and biphenyl and explain the reasoning based on GC results. Eliminate unnecessary peaks from Gas Chromatography results.arrow_forwardIs the molecule chiral, meso, or achiral? CI .CH3 H₂C CIarrow_forwardPLEASE HELP ! URGENT!arrow_forward
- Identify priority of the substituents: CH3arrow_forwardHow many chiral carbons are in the molecule? OH F CI Brarrow_forwardA mixture of three compounds Phen-A, Acet-B and Rin-C was analyzed using TLC with 1:9 ethanol: hexane as the mobile phase. The TLC plate showed three spots of R, 0.1 and 0.2 and 0.3. Which of the three compounds (Phen-A; Acet-B or Rin-C) would have the highest (Blank 1), middle (Blank 2) and lowest (Blank 3) spot respectively? 0 CH: 0 CH, 0 H.C OH H.CN OH Acet-B Rin-C phen-A A A <arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co



