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A sample of radioactive isotope has a halflife of 1 day how much of the original sample will be left at the end of the fourth day?
Wiki User
∙ 14y ago
If a sample of radioactive material has a half-life of one week the original sample will have 50 percent of the original left at the end of the second week. The third week would be 25 percent of the sample. The fourth week would be 12.5 percent of the original sample.
Wiki User
∙ 9y ago
Wiki User
∙ 14y ago1/16'th of the original sample will remain at the end of the fourth day, since each day 1/2 of the remaining amount will be fissioned. So at the end of day 1, only half the initial amount remains. At the end of day 2, it loses half the half, or another quarter, now leaving 1/4 of the original. at the end of day three, it loses half the quarter, now leaving 1/8'th, and at the end of the forth day it has lost half the eighth, leaving 1/16'th of the original sample.
Wiki User
∙ 9y agoOne gram will be left after 8 days.
Wiki User
∙ 9y agoOnly one gram will be left after 8 days.
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How much of a radioactive substance remains after 10 hours if its half life is 5 hours?
Since half of the atoms of the original substance will have decayed after 5 hours, half of what is left will have decayed after the next five hours. The answer is 0.25 or one fourth of the original atoms will remain.
Does gravity decrease to one fourth its original value if the distance between 2 objects is doubled?
Yes.
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Albert Einstein said that time is the fourth dimension.
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All of them.
What is the half life of a radioactive isotope if it takes 6.2 days for a 72 gram sample to decay to 18grams?
18 grams are one fourth of the original sample mass of 72 grams. Accordingly, the half life is 6.2/4 = 1.55 days.
How much of a radioactive substance remains after 10 hours if its half life is 5 hours?
Since half of the atoms of the original substance will have decayed after 5 hours, half of what is left will have decayed after the next five hours. The answer is 0.25 or one fourth of the original atoms will remain.
Is radioactivity a gas?
Some gases are radioactive, however, there are many solids that are also radioactive, like Uranium and Plutonium. Another source of radioactivity is liquids, produced as a byproduct from atomic power plants. A fourth class of radioactive material are aerosols, which are composed of radioisotopes.
After 4 half-lives what percent of the radioactive isotope is remaining?
Every two years half of the parent (the original) isotope decays into the daughter isotope. Therefore, after just two years, 50% of the parent isotope will remain. In another half life (two years), half of that 50% will remain. Therefore, in four years two half lives have passed and 25% of the parent isotope remains.
What fraction of a radioactive sample remains after one half-life?
Half of the original sample of a radio isotope remains after a half-life period. After two half-life periods, one-fourth of the radio isotope remains.
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The Fourth Wish - 1974 is rated/received certificates of: Australia:PG (original rating)
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Technetium is considered an extinct isotope, as is promethium. Their abundence is pretty much zero.
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1 quarter is equal to one fourth of the original height. therfor, 10 meters is a fourth of 40 meters.
What century did the original Saint Nicholas exist?
He was born in the third century and died in the fourth.
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Athos, Porthos and Aramis, Dartangnon was the fourth
Determine the amount of time it takes for three fourths of a radioactive sample of an isotope to decay?
The half-life is 4 days. That means half of it will be gone in 4 days, and that leaves half of the original sample. In another 4 days, half of the remaining half will have decayed. And that will leave only 1/4 th of the original sample. That means 3/4 ths of the original sample will have decayed. In 8 days, three fourths of a sample of a radioactive element with a half-life of 4 days will have decayed.
Who is the fourth warrior cat?
The fourth warrior cat in the original series of books is Graystripe. He is a loyal and brave warrior of ThunderClan who goes on many adventures throughout the series.
