Science math

Suppose a laboratory has a 38 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 1104 days? How much polonium is in the sample 1104 days later?

asked by Joshua
  1. 1104/138 = 8 half-lives
    after 8 half-lives, 1/256 remains, or 0.148g

    posted by Steve
  2. How many half-lives of polonium-210 occur in 1104 days? 1104/138 = 8.0 half-lives

    How much polonium is in the sample 1104 days later? 38 g * (1/2)^8 = 0.148 g

    posted by drwls
  3. Thank you both very much.

    posted by Joshua
  4. 8; 2,622 g

    posted by Joseph
  5. 8; 0.11

    posted by abbie
  6. 8';0.148

    posted by christina

Respond to this Question

First Name

Your Response

Similar Questions

  1. science

    Suppose a laboratory has a 31 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 966 days? How much polonium is in the sample 966 days later?
  2. sciencemath

    Suppose a laboratory has a 31 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 966 days? How much polonium is in the sample 966 days later?
  3. integrated math

    Suppose a laboratory has a 26 g sample of polonium-210. The half-life of polonium-210 is about 138 days.?
  4. algebra

    Consider that the half-life of Polonium-210 is 140 days.What approximate daily percentage of decay does Polonium-210 demonstrate?% (Round to two decimals.)(Hint: use the Rule of 70 backwards by dividing by the half-life period
  5. calc

    The half-life of polonium is 139 days, but your sample will not be useful to you after 95 % of the radioactive nuclei present on the day the sample arrives has disintegrated. For about how many days after the sample arrives will
  6. Chemistry

    Static charge can interfere with the production of plastic products by attracting dust and dirt. to reduce it, manufacturers expose the area to polonium-210, which has a half-life of 138 days. How much of a 25.0-g sample will
  7. physics

    How long will it take a sample of polonium-210 with a half-life of 140 days to decay to one-sixty-fourth of its original strength?
  8. Science

    How many days will it take for 3/4 of a sample of polonium 210 to decay?
  9. Chemistry

    In 2006, Soviet dissident Alexander Litvinenko was murdered when Polonium-210 was added to his tea; he died three weeks later. Polonium-210 is an alpha emitter. What other product is formed?
  10. Math

    How long will it take for a 1 g sample of Polonium 210 to lose all but 1/28 of its radioactivity if the half-life is 140 d?

More Similar Questions