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The Cs-131 nuclide has a half-life of 30 years. After 120 years, 8.7 g remain. What...
The radioactive isotope Cs-137 has a half-life of 30 years. Starting with 1.0 mg of Cs, how much would remain after 90 years?
A certain radioactive nuclide has a half life of 50.7 years. How long does it take for 87.5% of a sample of this substance to decay? years Submit Hide Hints Hint 1 Hint 4 Hint 3 Hint 2 What percentage of the original sample has decayed after two half lives have elapsed?
20) A 0.500-g sample of iodine-131 is obtained by a hospital. How much will remain after a period of one week? The half-life is 8.07 days.
20) A 0.500-g sample of iodine-131 is obtained by a hospital. How much will remain after a period of one week? The half-life is 8.07 days.
8. The nuclide 76 As has a half-life of 26.0 hrs. If a sample of "As weighs 344g, what mass 7As remains after 538 mins? a) b) c) d) 84g 157g 271g 365g
If C14 has a half-life of 4,000 years, what fraction will be remaining after 36,000 years? IfI 131 has a half-life of 8 days, what fraction will be left after a year?
A certain radioactive nuclide has a half life of 44.3 years. How long does it take for 87.5% of a sample of this substance to decay? years
A certain radioactive nuclide has a half life of 74.8 years. How long does it take for 87.5% of a sample of this substance to decay? ___years?
The decay of antimony-131 is first order with a half life is 23.03 minutes. How much of 1.4228 g sample would remain after 1.368 hours?
If a radionuclide has a half-life of 10 years, how many parent nuclide atoms will be left after 10 years since the start of the decay? How many daughter nuclides will exist at that time? Assume daughter nuclides are stable. Please show explanation, Thank You