Complete the table for the radioactive isotope. (Round your answer to two decimal places.)

Isotope: 239Pu
Half-life (years): 24,100
Initial Quantity: g
Amount After 1000 Years: 0.6

  1. 👍
  2. 👎
  3. 👁
  1. amount = (initital value) (1/2)^(t/24100)

    sub in : amount = .6, t = 1000
    I assume you want to find the initial value

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    Gallium65, a radioactive isotope of gallium, decays by first order-kinetics. The half-life of this isotope is 15.2 min. How long would it take for 7/8 of a sample of this isotope to decay? 15.2 min 30.4 min 45.6 min 48.0 min I'm

  2. Algebra

    Two different radioactive isotopes decay to 10% of their respective original amounts. Isotope A does this is 33 days, while isotope B does this in 43 days. What is the approximate difference in the half-lives of the isotopes? 3

  3. math

    3. Write the exponential growth function to model the following situation: A population of 422, 000 increases by 12% each year. 4. At t = 0 there are 50 grams of a radioactive isotope. The isotope has a half-life of 16 minutes.

  4. chemistry

    A nitrogen atom has 7 protons, and its most common isotope has 7 neutrons. A radioactive isotope of nitrogen has 9 neutrons. What is the atomic number and what is the mass number of this radioactive nitrogen? Show all of your work

  1. Math

    An isotope of sodium has a half-life of 20 hours. Suppose an initial sample of this isotope has mass 10 grams. The amount of the isotope (in grams) remaining after t hours is given by: (Note: We're assuming exponential decay here.

  2. Differential Equations

    Model radioactive decay using the notation t = time (independent variable) r(t) = amount of particular radioactive isotope present at time t (dependent variable) -λ = decay rate (parameter) Note that the minus sign is used so

  3. Science

    9. Assume you began with 10 g of a radioactive parent isotope. How many grams of parent isotope will be present in the same sample after 2 half-lives? A. 5.0 g B. 2.5 g C. 1.25 g D. 0.63 g Is it A???

  4. URGENT! Due soon and I used 8 of 10 attempts

    Archaeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive isotope 14C present in the object. The amount of isotope decreases in a first-order process. If 14.5% of the

  1. Calculus

    Consider the function below. f(x) = [1-(4/x)]^x (a) Use a graph to estimate the value of the limit of f(x) as x approaches infinity. (Round the answer to two decimal places.) (b) Use a table of values of f(x) to estimate the

  2. Biology-check my answer

    Hershey and Chase used the 35S isotope to label proteins. How does this isotope differ from the 32S isotope found in greatest natural abundance, and why did they choose 35S instead of 32S? A)35S has more protons than 32S; Hershey

  3. Earth Science

    Start with a hypothetical sample of 1,024 atoms of a radioactive isotope. Fill out the following table: # of half lives:0 Remaining Parent: 1024 Daughter: 0 Simplified P:D Ratio - 1 2 3 4 5 6 7 8 9 10

  4. college algebra

    An isotope of lead, 201Pb, has a half-life of 8.4 hours. How many hours ago was there 40% more of the substance? (Round your answer to one decimal place.) ____hr

You can view more similar questions or ask a new question.