The half life of thorium-232 is 1,405(6).10e10 years.
The cost of 5 grams of thorium varies depending on the supplier, but on average, it can range from $100 to $300 per gram. Therefore, 5 grams of thorium can cost between $500 to $1500.
2.5
An ounce of marijuana (or any matter) is approximately 28 grams. A half ounce would then be 14 grams.
Half of a quarter ounce (which is 7 grams) of methamphetamine would weigh 3.5 grams.
A half gram of heroin weighs 0.5 grams.
After 2 half-lives, 25% of the original amount of thorium-234 will remain. This is because half of the substance decays in each half-life period.
Thorium-234 has a half-life of 24.1 days. How much of a 100-g sample of thorium-234 will be unchanged after 48.2 days?
2.66666666666667 grams
The cost of 5 grams of thorium varies depending on the supplier, but on average, it can range from $100 to $300 per gram. Therefore, 5 grams of thorium can cost between $500 to $1500.
1.875g
After one half-life, half of the original amount of Uranium-235 would remain. After four half-lives, only ( \frac{1}{2^4} ) or ( \frac{1}{16} ) of the original amount would be left. Therefore, if you started with 100 grams of Uranium-235, 6.25 grams would remain after four half-lives.
After 24,10(3) days (the half-time of this isotope) the mass is 50 %.
500 grams
2.5
Half a pound is equal to approximately 226.8 grams.
15 grams = 0.53 ounces.
To determine the remaining amount of a 200 gram sample after 36 seconds with a half-life of 12 seconds, we first calculate how many half-lives fit into 36 seconds. There are three half-lives in 36 seconds (36 ÷ 12 = 3). Each half-life reduces the sample by half: after the first half-life, 100 grams remain; after the second, 50 grams; and after the third, 25 grams. Therefore, 25 grams of the sample would remain after 36 seconds.