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How many days does it take for 32 grams of palladium -103 to decay to 2.0 grams the half - life of palladium -103 is 17 days?
It would take 51 days for 32 grams of palladium-103 to decay to 2.0 grams. This calculation involves multiple half-lives, as every 17 days half of the remaining material decays. By dividing the initial mass by 2 repeatedly until you reach 2.0 grams, you find that it takes 3 half-lives for the decay to occur.
How long will it take for 30g of radon-222 to decay to 7.5g?
Radon-222 has a half-life of about 3.8 days. To calculate the time it will take for 30g to decay to 7.5g, you can use the radioactive decay equation: final amount = initial amount * (1/2)^(t/h), where t is the time and h is the half-life. Solving for t gives approximately 7.6 days.
How long would it take for iodine-131 to decay into xenon?
The half life of Iodine-131 is 8.02 days, that means that say if you had 1 gram of 131I after approximately 8 days there would be only 0.5g left. The other half would have become Xenon-131. After 6 half lives (~48 days in your case) you would only have 1.6% of the original amount left.
How long will it take for a 12.0-g sample of iodine-131 to decay to leave a total of 1.50 g of the isotope The half-life of iodine-131 is 8.07 days?
half life is 8.1 days, so it takes 8.1 days for half the iodine sample to decay. It takes another 8.1 days for half of the remaining sample (ie. 1/4th of the original sample) to decay. So it takes 16.2 days for 3/4th of the sample to decay.
What is nuclear equation for the alpha decay of platinum -192?
I do not see an isotope of iridium that does alpha decay. There is an interactive link to isotopes below. (Perhaps I am missing it.)
What is the lifetime for neptunium -238?
The halflife is 2.1 days. Multiply that by about 5 to get the time to decay to near zero.10.5 days or so.
How long does Klonopin stay in your in urine?
3-5 days, 18-50 hour halflife
If 10 percent of a radioactive substance disintegrates in 4 days what is it's half-life?
The half-life of the radioactive substance is 13.8 days. This is calculated by dividing the natural logarithm of 2 by the decay constant, which is obtained from the percentage disintegration in a given time period. In this case, 0.1 (10 percent) disintegrates in 4 days.
Does fermium-257 undergo nuclear decay?
Alpha decay to californium 253. The half life of fermium 257 is 100.5 days.
Does all nuclear wastes completely disappear after 50 years?
Not by a long shot. The most radioactive isotopes will decay very rapidly and be safe in much less than 50 years (e.g. iodine-131 with a halflife of about 8 days will be gone in less than 2 months), but less radioactive isotopes will decay so slowly they can be around for hundreds of thousand of years (e.g. plutonium-239 with a halflife of 24400 years will be gone in under 200000 years) to longer than the age of the universe (e.g. uranium-238). Slightly oversimplified, the most dangerous isotopes in nuclear waste tend on average to disappear first with less dangerous isotopes persisting for longer periods.
The radioactive decay constant is days-1 if the radioisotope has a half-life of 431 days?
0.00161
The radioactive decay constant is days-1 if the radioisotope has a half-life of 52 days?
0.013
The radioactive decay constant is days-1 if the radioisotope has a half-life of 163 days?
0.00425
What percent is 2 of 5 of days?
2 days out of 5 - is 40 percent
How do you determine the half life of a radioactive substance that has changed through radioactive decay After 40 days the original substance left is is one sixteenth of the original amount?
To determine the half-life of the substance, you can use the fact that after one half-life, the substance will be reduced to half of its original amount. In this case, after 40 days, the substance is reduced to one sixteenth of its original amount, which represents 4 half-lives (since 1/2^4 = 1/16). Thus, each half-life of this substance is 10 days.
What does 2.5 percent 30 days meas?
2.5 percent of 30 days is 0.75 days or 18 hours.
The radioactive decay constant is blank days -1 if the radioisotope has a half-life of 52 days?
0.013
