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If there is a radiation that has a half life of 10 days and you have it for 110 days what will be the fraction of radiation left?
After 5 days, you have half left.
After 10 days, that's half of the half again = a quarter.
After 15 days, that's half of a quarter = an eighth.
After 20 days, that's half an eighth = one sixteenth.
After 25 days = 1/32
After 30 days = 1/64
After 35 days = 1/128
After 40 days = 1/256
After 45 days = 1/512
After 50 days = 1/1024th of the initial radiation.
What else can I help you with?
A particular element has a half life of 27 daysafter 54 days how much of the radioactive material is left?
The half life is the time it takes for half the atoms in a given sample to decompose. Knowing this then after 27 days there is half the amount left. After 54 days then there is half that half left so that's a quarter.
What fraction of a radioactive sample decays after three half lives?
If I take a radioactive sample of 400 moles of an unknown substance and let it decay to the point of three half-lives I would have 50 moles left of the sample. 1/2 of what is left will decay in the next half-life. At the end of that half-life I will have 25 moles left of the unknown substance or 4/25.
A radioactive sample has a half-life of 5.0 min What fraction of the sample is left after 20 min?
After 20 minutes, there have been 4 half-lives (20 min / 5 min per half-life). Each half-life reduces the sample by half, so the fraction of the sample left after 20 minutes is (1/2)^4, which is 1/16. Therefore, 1/16 of the original sample is left after 20 minutes.
30 gram of a radioactive substance that has a half-life of 2 days after 2 days how much will be left?
With radioactive decay, predicting when any individual atom will decay is nearly impossible. However, when a lot a particles are present, then it is possible to get a general idea of how much will decay in a certain period of time. The half-life is this measurement, and it is the time that it takes for one halfof the substance to decay. Hence half-life or how long it takes for half to "die".For any size sample of a substance, the half-life is how long it takes for half to be left, so for a substance with a half-life of 2 days, half of the substance will decay in two days. Therefore your answer is simply half of 30g which is 15g.Additional reading: http://simple.wikipedia.org/wiki/Radioactive_decay
If the half life of an element is 5 days and 100 milligrams of the element is initially available how many milligrams (mg) of the element is available after 20 days?
The answer is 2. If after one half-life only half of the element remains, then after another half-life half of what was there only remains. So a half of a half is a quarter (or a fourth). So that's 2 half-lives.
The half of iodine-125 is 60 days.What fraction of iodine-125 nuclides would be left after 360 days?
Assuming that "half" refers to "half-life", 360/60 = 6 so fraction left = 1/26 = 1/64
A particle element has a half-life of 27 days after 54 days have elapsed how much of the radioactive material is left is called?
54 days is 2x27. After one cycle of a half life (27 days), one-half of the substance would be left. After a second cycle of a half life (27 more days, for a total of 54), one-half of one-half is left, or one-fourth.
Sam has a half and joh a quarter of a cake what fraction of the cake is left?
1/4 of the cake is left.
Chaser-381 has a half life of 2 days if you start with 8 grams of chaser-381 how much would you have left after eight days?
Eight days would be four half-lives. One-half to the fourth power is one-sixteenth. So you would have half a gram left.
A particular element has a half life of 27 daysafter 54 days how much of the radioactive material is left?
The half life is the time it takes for half the atoms in a given sample to decompose. Knowing this then after 27 days there is half the amount left. After 54 days then there is half that half left so that's a quarter.
A particular element has a half-life of 27 days After 54 days have elapsed how much of the radioactive material is left?
1/4. After 27 days, half of the material will have decayed. After another 27 days half of the remaining material will have decayed. Half of half is 1/4.
A rope is cut in half and half is discarded From the remaining half 1 quarter is cut off and discarded What fraction of the original rope is left?
3/8
Jeff has half pizza left in the fridge at breakfast he ate one-third of it what fraction of the original pizza he have left for lunch?
1/3
Jeff has half pizza left in the fridgeat breakfast he ate a third of itwhat fraction of the original pizza does he have left for lunch?
1/3 pizza left.
Strontium-85 has a half-life of 65.2days if you have 10 grams of strontium-85 how much will be left after 65.2 days?
After 65.2 days, half of the original amount of strontium-85 will remain, so 5 grams will be left.
When was Left Fraction created?
Left Fraction was created in 1940.
What fraction of a radioactive sample decays after three half lives?
If I take a radioactive sample of 400 moles of an unknown substance and let it decay to the point of three half-lives I would have 50 moles left of the sample. 1/2 of what is left will decay in the next half-life. At the end of that half-life I will have 25 moles left of the unknown substance or 4/25.
