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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.
The half life of iron 59 is 44.5 days how much of 2mg sample will remain after 133.5 days?
After 133.5 days, there will be 0.125 mg of the 2 mg sample of iron-59 remaining. This can be calculated by taking into account each half-life period (44.5 days) and calculating the remaining amount after 3 half-lives (133.5 days).
A radioactive substance has has life of 5 days initial mass of 12kg how much the original isotope will remain after 10 days?
After 10 days, 1/2 of the original isotope will remain since its half-life is 5 days. This means 6kg of the original isotope will remain after 1 half-life, which remains the same after 10 days since another half-life has passed.
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.
Chromnium-51 has a half life of 28 days. How much of a 24.0 gram sample will remain after 84 days?
The equation for half-life decay is AT = A0 2 (-T/H) so, plug in 28, 24, and 84 and you get AT = (24) 2 (-84/28) AT = (24) (0.125) AT = 3 Of course, that's the formal way to do it. In this case, one could also have divided 84 by 28, giving 3, which means that 3 half-lives would be used, and that is simply 1/23 or 1/8.
What fraction of a radium sample will remain after 3240?
The answer depends on 3240 WHAT: seconds, days, years?
How much of a g sample of barium-131 would remain after 36 days?
The mass is 1,075 g.
How much of a 10-g sample of barium-131 would remain after 36 days?
The mass is 1,075 g.
How much of a 100 g sample of thorium 234 will be unchanged after 48.2 days?
After 48,2 days the amount of Th-234 will be 25 g.
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?
How many days until one-sixteenth of a 54.2 g sample of thorium-234 remains?
The half-life of thorium-234 is about 24 days. Therefore, it would take approximately 96 days for one-sixteenth of the original 54.2 g sample of thorium-234 to remain.
Radioactive iodine-131 has a half-life of eight days. The amount of a 200.0 gram sample left after 32 days would be -?
12.5 g
The half life of Au198 is 2 7 days When there are 800 atoms of Au198 in a sample a scientist starts a stopwatch The scientist stops the stopwatch at 8 1 days there are atoms of Au198 rema?
At 8.1 days, 400 atoms of Au198 would remain in the sample. This is because after 8.1 days, two half-lives of Au198 have passed, reducing the initial 800 atoms to 400.
Will benzodiazepine stay in the urine 72 hours after the sample is given?
it all really depends on your body. for me it took eight days. I had to do court ordered drug tests
How can a man stay awake for eight days riddle?
The riddle "How can a man stay awake for eight days?" has a clever twist: the answer is that he sleeps at night. The phrasing implies staying awake continuously, but by sleeping during the night, he can remain awake for the entire duration of the day over eight days. It's a playful reminder that the interpretation of words can change the meaning of a scenario.
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.
How many grams of a 250-g sample of thorium-234 would remain after 40 days had passed?
79 grams <><><><><> AT = A0 2 (-T/H) AT = 250 2(-40/24.1) AT = ~79
