0
How much of a radioactive substance remains after 5 hours if it's half-life is 5 hours?
6.25
What else can I help you with?
How much of a radioactive substance remains after 10 hours if its half life is 5 hours?
After 10 hours, 25% of the radioactive substance remains because each half-life reduces the amount by half. So, after the first 5 hours, 50% remains, and after the next 5 hours, half of that amount remains, which is 25%.
What is a half-life of radioactive substance if it takes 6 hours for 50 percent of it to decay?
6 hours. you have a hot one there!
If the half-life of a radioactive substance is 10 hours how long will it take for 50 percent of it to decay?
The half-life of a radioactive isotope is defined as the time taken for the isotope to decay to half of its initial mass. So to decay to 50 percent of its initial mass will take one half-life of the isotope. One half-life of the isotope is 10 hours so the time taken to decay is also 10 hours.
What is the half life of a radioactive substance if 2.4G decays to 1.80G in 66 hours?
The half-life of a radioactive substance that decays from 2.4g to 1.8g in 66 hours is 159 hours. AT = A0 2(-T/H) 1.8 = (2.4) 2(-66/H) 0.75 = 2(-66/H) log2(0.75) = log2(2(-66/H)) -0.415 = -66/H H = 159
If the half life of a radioactive substance is 10 hours how long will it take for 75 percent of it to decay multiple choice question is it 15 hours 10 hours 5 hours or 20 hours?
Its 5 hours. 50% of the substance is decayed at 10 hours (that is what half life means. It's full life is 20 hours). Multiple 75% times 20 hours to find that 75% is 15 hours. Subtracrt 15 hours from 20 hours to get the answer of 5 hours for the decay of 75% of the substance.
How much of radioactive substance remains after 15 hours if it's half life is 5 hours?
The half-life of a radioactive substance is the time that it takes for half of the atoms to decay. With a half-life of 10 days, half has decayed in this time. After 20 days, a further 10 days/another half life, a further half of the remainder has decayed, so 1/4 of the original material remains, 1/4 of 15g is 3.75 grams. This is the amount of original radioactive substance remaining, but it’s daughter isotope ( what the decay has produced ) is also present, so the original sample mass is effectively constant, especially in a sealed container. Even in an unsealed container, and assuming alpha ( helium nucleii) emission, a drop in mass per radioactive atom of 4 Atomic Mass units, compared with the original atom of, say 200 amu is only 2% mass decrease, less for heavier decaying nucleii.
How much of a radioactive substance remains after 24 hours if its half life is 5 hours?
Using the formula Nt = N0*(1/2)t/t1/2 where Nt is the amount of stuff remaining after an amount of time, t, and t1/2 is the half-life, you get Nt = .036N0. So about 3.6% of the radioactive stuff is left.
What is the duration of Radioactive Dreams?
The duration of Radioactive Dreams is 1.63 hours.
The set of ordered pairs (t,m) where m is the remaining mass of a 500-gram sample of a radioactive substance that has been decaying for t hours?
Hvbh
A pure radioactive substance has a half-life of 3 hours. How long would it take a mass of 12g of that substance to decay to 3g?
It would take 6 hours for a mass of 12g of the substance to decay to 3g. This can be calculated by recognizing that for every half-life, the mass is halved. So, after 1 half-life (3 hours), the mass would be 6g, and after 2 half-lives (6 hours), the mass would be 3g.
What are the nuclear changes during decay of copper 67?
Copper-67 undergoes beta decay with a halflife of 59 hours, becoming stable Zinc-67.
What is the half life of a radioactive substance if it takes 6 hours for 50 percent of it to decay?
That is the half-life - the 6 hours in this case.That is the half-life - the 6 hours in this case.That is the half-life - the 6 hours in this case.That is the half-life - the 6 hours in this case.
