# Radioactive carbon dating equation who is carl thomas dating

As long as the organism is alive, the amount of carbon-14 remains relatively constant.However, when the organism dies, the amount will decrease over time.By comparing the activity of an archeological artifact to that of a sample of the living organism one can estimate the age of the artifact.Example: A sample of wood taken from an ancient tomb had an activity of 7.0 counts per minute (decays per minute).If a freshly prepared solution of cis-platin has a concentration of 0.053 M, what will be the concentration of cis-platin after 5 half-lives? What is the percent completion of the reaction after 5 half-lives? Given: rate constant, initial concentration, and number of half-lives Asked for: half-life, final concentrations, and percent completion Strategy: at 650°C. Carbon-14 is decaying constantly with a half-life of 5720 years.For a given number of atoms, isotopes with shorter half-lives decay more rapidly, undergoing a greater number of radioactive decays per unit time than do isotopes with longer half-lives.The half-lives of several isotopes are listed in In our earlier discussion, we used the half-life of a first-order reaction to calculate how long the reaction had been occurring.This period of time is called the half-life of the reaction, written as .If two reactions have the same order, the faster reaction will have a shorter half-life, and the slower reaction will have a longer half-life.

Carbon-14 is decaying constantly with a half-life of 5720 years.For a given number of atoms, isotopes with shorter half-lives decay more rapidly, undergoing a greater number of radioactive decays per unit time than do isotopes with longer half-lives.The half-lives of several isotopes are listed in In our earlier discussion, we used the half-life of a first-order reaction to calculate how long the reaction had been occurring.This period of time is called the half-life of the reaction, written as .If two reactions have the same order, the faster reaction will have a shorter half-life, and the slower reaction will have a longer half-life.In fact, radioactive decay is a first-order process and can be described in terms of either the differential rate law () or the integrated rate law: $N = N_0e^$ $\ln \dfrac=-kt \label$ Because radioactive decay is a first-order process, the time required for half of the nuclei in any sample of a radioactive isotope to decay is a constant, called the half-life of the isotope.