What fraction of titanium would remain after one hour? minutes) there are 10 half lives. Therefore the answer is: 9) A medical institution requests 1 g of bismuth-214, which has a half life of 20 min.
What fraction of the original nuclei would remain after 1 minute?
Hence, the fraction of the original nuclei would remain after 1 minute is 2.445 x 10⁻⁴.
What fraction of the medicine remains after one hour?
30 minutes after the drug administration, 25 mg of the drug remains in the body. 45 minutes after the drug administration, 12.5 mg of the drug remains in the body. 1 hour after the drug administration, 6.25 mg of the drug remains in the body.
What fraction of Co 60 source will remain after 1 year?
1 For cobalt-60, which has a half-life of 5.27 years, 50% remains after 5.27 years (one half-life), 25% remains after 10.54 years (two half-lives), 12.5% remains after 15.81 years (three half-lives), and so on.
How long does 18.0 g of Ra 226 take?
How long will it take for 18.0 grams of Ra-226 to decay to leave a total of 2.25 grams? Ra-226 has a half-life of 1600 years. This decay process takes 4800 years to occur.
Is CO 60 a beta emitter?
The most common radioisotope of cobalt is cobalt-60, which is a beta and gamma emitter. Metallic cobalt-60 is commonly used in sealed gamma sources. Contamination from solutions containing cobalt may be treated with water.
How much will remain after 800 years?
The quantity of radioactive nuclei at any given time will decrease to half as much in one half-life. For example, if there are 100g of Cf-251 in a sample at some time, after 800 years, there will be 50g of Cf-251 remaining; after another 800 years (1600 years total), there will only be 25g remaining.
How long will it take for 18.0 grams of RA 226 to decay to leave a total of 2.25 grams RA 226 has a half-life of 1600 years?
How long will it take for 18.0 grams of Ra-226 to decay to leave a total of 2.25 grams? Ra-226 has a half-life of 1600 years. This decay process takes 4800 years to occur.
What is the easiest way to calculate half life?
1:233:52Half Life Calculations Part 1 (easy way) - YouTubeYouTube
How do you do half life problems with logs?
7:1611:38Solving Half-Life Problems - YouTubeYouTube
How do you calculate a half-life?
3:084:23GCSE Science Revision Physics Half Life - YouTubeYouTube
How do you do half-life?
15:5918:02Half Life Chemistry Problems - Nuclear Radioactive - YouTubeYouTube
How long is two half lives?
48,000 years So the answer is two half-lives, or 48,000 years.
Is NB 92 radioactive?
The most stable radioisotope is 92Nb with a half-life of 34.7 million years. The next longest-lived niobium isotopes are 94Nb (half-life: 20,300 years) and 91Nb with a half-life of 680 years. There is also a meta state of 93Nb at 31 keV whose half-life is 16.13 years.