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First Order Half Life quiz

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Terms in this set (15)

  • What type of process does radioactive decay follow?
    Radioactive decay follows a first order process.
  • To what is the rate of radioactive decay proportional?
    The rate of radioactive decay is proportional to the number of radioactive nuclei, n.
  • What is the decay constant represented by in the rate law for radioactive decay?
    The decay constant is represented by k in the rate law for radioactive decay.
  • How does the first order integrated rate law for radioactive decay differ from that for chemical kinetics?
    The equations are nearly identical, but the variable for concentration is replaced with the number of radioactive nuclei, n.
  • What does n₀ represent in the context of radioactive decay?
    n₀ represents the initial number of radioactive nuclei.
  • What does nT represent in the first order integrated rate law for radioactive decay?
    nT represents the final number of radioactive nuclei at time T.
  • What is the general form of the first order integrated rate law for radioactive decay?
    The general form is ln(nT) = -kt + ln(n₀).
  • In radioactive decay, what does the variable t stand for?
    The variable t stands for time.
  • How is the decay constant k in radioactive decay similar to the rate constant in chemical kinetics?
    Both are constants that determine the rate at which the process occurs, but k is specifically called the decay constant in radioactive decay.
  • What is the main difference between chemical kinetics and radioactive decay in terms of what is being measured?
    Chemical kinetics measures how fast reactants become products, while radioactive decay measures how fast a radioactive compound decays.
  • What is the significance of the negative sign in the first order integrated rate law for radioactive decay?
    The negative sign indicates that the number of radioactive nuclei decreases over time.
  • If you know how to use the first order integrated rate law from chemical kinetics, what does this imply for radioactive decay problems?
    It implies you can easily adapt the method to solve radioactive decay problems since the equations are very similar.
  • What is the relationship between the decay rate and the number of radioactive nuclei?
    The decay rate is directly proportional to the number of radioactive nuclei present.
  • What is the purpose of using the integrated rate law in radioactive decay?
    The integrated rate law allows you to calculate the number of radioactive nuclei remaining after a certain time.
  • Why is it important to distinguish between the rate constant and the decay constant?
    It's important because, although they play similar roles, the decay constant specifically refers to the rate of radioactive decay.