# Science economic

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

1. 👍 0
2. 👎 0
3. 👁 235
1. Note that 2/4 is actually 1/2.

Sra

1. 👍 0
2. 👎 0

## Similar Questions

Which of the following statements about radioactive dating is true? a. Radioactive decay is the rate at which new atoms form. b. During radioactive decay, atoms break down, releasing particles or energy. c. The rate of decay of a

asked by Anonymous on October 10, 2013
2. ### math

You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics. You purify a sample of 2 grams. One of your colleagues steals half of it, and eight days later you find

asked by Roseanne on October 21, 2012
3. ### Chemistry

Using the balanced equation below, how many grams of cesium fluoride would be required to make 73.1 g of cesium xenon heptafluoride? CsF+XeF6 ---> CsXeF7

asked by Kylar on May 25, 2015
4. ### Chemistry

Barium-122 has a half-life of 2 minutes. If 10.0 g of Ba-122 are produced in a nuclear reactor how much Ba-122 will remain 10 minutes after production ceases? Question 11 options: 2.50 g 1.25 g 0.625 g 0.313 g

asked by Tamera on December 2, 2014
5. ### Chemistry

Which radioactive sample would contain the greatest remaining mass of the radioactive isotope after 10 years? A. 2.0 grams of 198 Au B. 2.0 grams of 42 K C. 4.0 grams of 32 P D. 4.0 grams of 60 Co By the way the numbers next to

asked by Sanjay on March 3, 2007
1. ### Algebra 1

One long-distance telephone company offers a plan such that the first 20 minutes costs \$.99 and each additional minute costs \$.09. Solve an inequality to find the maximum amount of full minutes you can talk for \$5.00. At first I

asked by Julia on October 14, 2013
2. ### college algebra

One isotope of holmium, 162Ho, has a half life of 22 minutes. The half-life of a second isotope, 164Ho, is 37 minutes. Starting with a sample containing equal amounts, find the ratio of the amounts of 162Ho to 164Ho after one

asked by Anonymous on October 30, 2014
3. ### 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 on January 7, 2013
4. ### chemistry

the half-life of polonium-218 is 3.0 minutes. what percentage of the original sample remains after 4 half-lives?

asked by melissa on December 10, 2008
5. ### Chemistry

A radioactive substance has a half-life of 3 minutes. After 9 minutes, the count rate was observed to be 200. What was the count rate at zero time?

asked by The orange baboon on June 1, 2020
6. ### Chemistry

Will you check this answer for me? the half-life of strontium-87 is 2.8hr. What percentage of this isotope will remain after 8 hours and 24 minutes? ?? 34%