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After the first half-life, you will have one half of the starting amount. After a second half-life period, you'll be down to one quarter.
Of the part that radioactively decays, about 11% of it will decay to 40Ar, and the remainder to 40Ca.
Of your total sample of ordinary potassium, only 0.012% will be 40K. The half-life of 40K is about 1.3x109 years.
What else can I help you with?
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?
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?
What is a U100 soil sample?
According to the Handbook of tropical residual soils(Huat et al, 2012), it's a 100mm diameter sample up to 450 mm long, obtained with the British U100, which is an open-driver sampler that produces samples with much higher quality than the SPT.
What characteristic depends on the amount of matter in the sample This is based on the Classification of Matter Worksheet.?
The characteristic that depends on the amount of matter in a sample is its mass. Mass is a measure of the amount of matter in an object or substance, and it can change depending on how much of the substance is present.
How much cesium would remain from a 10 g sample after 6 years?
After 6 years, approximately 5 grams of cesium-137 would remain from a 10 g sample due to its half-life of around 30 years. This decay is exponential, with about half of the original sample decaying every 30 years.
How much cesium half life 2 years would remain from a 10 g sample after 2 years?
11/4 g apex
How much of an 8 gram sample is left after 3 half lives?
2.66666666666667 grams
How much time will elapse before only one - fourth of the decayed uranium 237 sample is left?
3,375 days
How much radioactive sample will be left at the end of two weeks?
That would depend on the initial amount of the substance, as well as on its half-life.
If gallium-68 has a half-life of 68.3 minutes how much of a 10.0-mg sample is left after one half-life?
5 mgs If you found this helpful please click trust below
How much cesium is left after 4 half-lives?
1/16 of the original sample of any unstable element remains after 4 half lives.
What is the difference between radioactive decay and radiometric decay?
It is the difference between sand running out of an hour glass and determining what time it is by how much sand is left. Radioactive decay happens at a steady rate. If you can determine how much of that radioactive isotope ought to have been in a sample at the start and you can measure how much is left, you can tell how much time has passed.
How much of the original sample will be left at the end of the second day if a sample of radioactive isotope has a half life of 1 day?
Hi, Each half-life means the mass of the sample has decreased by 1/2 its mass. Thus; After 1 half-life, 1/2 the sample has decayed. After 2 half-lives 3/4 of the sample has decayed. Hope this helps.
What property depends on the amount of matter in the sample?
Depends on what the sample is and how much of it you have.
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?
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.
How much of an 80-milligram sample of Iodine-131 would be left after 32 days?
After 32 days, approximately 5 milligrams of the 80-milligram sample of Iodine-131 would be left. Iodine-131 has a half-life of about 8 days, so after each 8-day period, half of the remaining sample will decay.
How much of a 100 gram sample would remain unchanged after two hours?
This would depend on the specific sample and its stability. Without additional information, it is not possible to determine how much of the sample would remain unchanged after two hours.
How much error between sample mean and population mean?
The answer depends on the underlying variance (standard deviation) in the population, the size of the sample and the procedure used to select the sample.
