Science economic

posted by .

Cesium 138 has a half life equal to 32.2 minutes. how long will it take for 2/4 of this sample to decay

  • Science economic -

    Note that 2/4 is actually 1/2.


Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    If there are 80 milligrams of a radioactive element decays to 10 milligrams in 30 minutes then what is the elements half life in minutes?
  2. Chemistry please help!

    A Cesium 137 sample has a measured radioactivity of 50 microcuries.Cesium 137 has a half-life of 30 years. How long will it take this sample to be reduced to a residual radioactivity of 6.25 microcuries?
  3. Pre Calculus

    Radium-221 has a half-life of 30 s. How long will it take for 95% of a sample to decay
  4. chemistry

    How long will it take for 25% of the C-14 atoms in a sample of C-14 to decay?
  5. Math

    The half-life of strontium-90 is 28 years. How long will it take a 60 mg sample to decay to a mass of 15 mg?
  6. math

    The half life of iodine - 131 is 8 days. How long will it take for 7/8 of the sample to decay?
  7. Calculus

    Ba has a half-life of 283.2 hours. How long would it take for the 50 mg of Ba in a sample to decay to 1.0 mg?
  8. math

    An unknown radioactive element decays into non-radioactive substances. In 100 days the radioactivity of a sample decreases by 64 percent. a)(a) What is the half-life of the element?
  9. science

    If the half-life of a 20.0g is known to be 24 minutes, how long will it take for only 5.0 grams of the sample to remain A.6 minutes B.24 minutes C.48 minutes D.96 minutes I NEED HELP!!!!
  10. Science- Radioactive Dating

    Which of the following statements about radioactive dating is true?

More Similar Questions