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A 200 gram sample having a half- life of 12 seconds would have how much remaining after 36 seconds?
Aleyatas
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Howmany minutes are in 122 seconds?
There are 60 seconds in a minute. Two minutes would be 120 seconds. This would mean there are 2 minutes and 2 seconds in 122 seconds.
What is the sample size definition?
Sample size is the number of samples arawn from a population. If you drew 20 samples, your sample size would be 20.
How do you calculate mineral contents of the sample?
We would need to know what sample you are referring to in order to answer this question.
What comes after tenths of seconds on a stopwatch?
They would be whole seconds.
Why do some companies measure an hour by one hundred seconds?
They don't. It would not be feasible to do this. 100 seconds is one minute forty seconds. One hour would be 3,600 seconds.
How many grams of radium-222 remain in a 12-gram sample after 76 seconds?
After 76 seconds, half of the radium-222 would have decayed (its half-life is about 3.8 days). Therefore, the quantity of radium-222 remaining in the 12-gram sample would be 6 grams.
Why would having a larger sample size be a better idea than having a samll sample size when doing an experiment?
less bias and error occur when sample size is larger
What is the half life of a radioisotope if a 100g sample becomes 25g after 18 years?
The half-life of the radioisotope is 9 years. This is calculated by determining the time it took for half of the original sample to decay. Since the sample went from 100g to 25g in 18 years, it lost 75g in that time period. After the first half-life, the sample would have 50g remaining, and after the second half-life, it would have 25g remaining.
The half-life of Na-24 is 15 hours When there are 1000 atoms of Na-24 in a sample a scientist starts a stopwatch The scientist stops the stopwatch at 45 hours there are atoms of Na-24 remaining?
Based on the half-life of Na-24, after 1 half-life (15 hours), there would be 500 atoms remaining. After 2 half-lives (30 hours), there would be 250 atoms remaining. After 3 half-lives (45 hours), there would be 125 atoms remaining in the sample.
If Astatine-218 has a half-life of 1.6 s Suppose you have a 1.2-g sample of astatine-218 How much of the sample remains unchanged after 6.4 seconds Explain how you solved the problem?
After 6.4 seconds, there would be 0.3g of the original sample of Astatine-218 remaining unchanged. This is calculated by dividing the time elapsed by the half-life to determine the number of half-lives passed (6.4 s ÷ 1.6 s = 4 half-lives), then using this to calculate the remaining amount (1.2 g ÷ 2^4 = 0.3 g).
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.
What is the mass of K 42 remaining in a 16g sample of 37.2hrs?
To find the mass of K-42 remaining after 37.2 hours, we would need additional information such as the half-life of K-42. Without this information, it is not possible to calculate the remaining mass.
WHAT ARE THE REASONS A DENTIST WOULD RECOMMEND A PARTIAL VERSUS HAVING THE REMAINING TEETH EXTRACTED AND HAVING DENTURE MADE?
There could be a few different reasons on why a dentist would recommend a partial versus and having teeth pulled. The main reason would probably be because the teeth are no more good.
If you had a 100 gram sample of plutonium how much would be left in 43 years?
After 43 years, about half of the plutonium-239 in the sample would decay into uranium-235. This means the 100 gram sample would contain approximately 50 grams of plutonium-239 remaining.
Molybdenum-99 has half a half-life of 66 hours. after 132 hours how much of an initial sample of 10 ci of mo-99 would remain?
After 132 hours, 1/4 of the initial sample of 10 Ci of Mo-99 would remain. Since the half-life is 66 hours, after 66 hours half of the sample would remain (5 Ci), and after another 66 hours (totaling 132 hours), half of that remaining amount would be left.
After 6 half-lives What percentage of a radioactive sample remain?
After 6 half lives, the remaining will be (1/2)6 i.e 1/64 th of the initial amount. Hence by percentage it would be 1.5625 %
Consider the phase diagram below What phase change occurs as the temperature of the sample at 3 atm is raised from -90ºC to -50ºC?
The phase change that would occur as the temperature of the sample at 3 atm is raised from -90ºC to -50ºC is solid to liquid. The sample would transition from a solid phase to a liquid phase as it heats up within the two temperature points mentioned while remaining at 3 atm pressure.
