Search: The half life period of

If the half life- period of a radioactive element is 1600.After how many years will if remains 25% o... The half life period of radium is 1600 years.In how many years 1 gram of radium lose 1 centigram?? The half life period of a radioactive element is 27.96 days. Calculate the time taken by a given sam... 1. The half-life for the (first-order) radioactive decay of 14C is 5730 yr (it emits a β ray wit... The half life of Am-241 is 432 y. If 2.00 g of Am-241 is present in a sample, what mass of Am-241 is... The half-life for the first order reaction of a substance A is 50.5 s. How much time is needed for t... What is the half-life of a 100.0 g sample of nitrogen-16 that decays to 12.5 g of nitrogen-16 in 21.... What is the half-life of the element Lokium? What is the half-life (in h) for the decomposition of O3 when the concentration of O3 is 2.37 ✕ 10−6... If the half-life of a first-order decomposition reaction is 24.2 minutes, how long will it take for... I have: the half life of U-238 is 4.5 x 10^9 yr. A sample of rock of mass 1.6g produces 29 disinteg... What is the half-life of an isotope if it decays to 12.5% of its radioactivity in 18 minutes? The half-life of I-131 is 8.00 days. If a medical treatment involves a dose of 400. mg of I-131, how... 1. What is the half-life of Strontium-90? Explain your answer. Honestly I don't know how to get t... The half-life (t1/2) of a first order reaction is 0.100 s. What is the rate constant? a. 6.93 s-1... 3. The half-life of a certain drug in the human body is 8 hours how long it would take for a dose... The half-life of P-32 is 14 days. How long after a sample is delivered can a laboratory wait to use... If the half-life of a 20.0g is known to be 24 minutes, how long will it take for only 5.0 grams of t... The half-life for the second-order reaction of a substance A is 58.2 s when A0 = 0.63 mol L-1 Calcul... The half-life for the second-order reaction of a substance A is 55.8 s when concentration of initial... The half-life for the first-order conversion of A to B is 56.5 hours. How long does it take for the... Ba has a half-life of 283.2 hours. How long would it take for the 50 mg of Ba in a sample to decay t... The half-life of xe-133 is 126 hours. Starting with 250 mg, after 500 hours around how many mg remai... Ba-140 has a half life of 13.0 days. What fraction of a sample will remain after 39 days? The half-life of Th-232 is 1.4E10. Find the number of disintegrations per hour emitted by 1 mol of T... ok so i got... the half life of carbon-14 is 5730 years, the relation c+(1/2)^ N/5730 is used to ca... The half-life of the following first order reaction is 231 seconds. What percent of the original con... If 6.90 g of (half-life = 5.30 y) are allowed to decay, how many grams would be left after 1.00 y a... If the half-life of a certain radioactive substance is 2000 years, estimate how many years must elap... K-42 has a half-life of 12.4 hours. If you begin with 250g of K-42, determine how much you will hav... The​ half-life of a certain radioactive element is about 1500 years. After 2800 ​years, what per... If C14 has a half-life of 4,000 years, what fraction will be remaining after 36,000 years? 1. The half-life of a first-order reaction is 9.89 minutes. How many minutes will have elapsed after... If I 131 has a half-life of 8 days, what fraction will be left after a year? Consider that the half-life of Polonium-210 is 140 days.What approximate daily percentage of decay d... what is the half-life of the nuclide If the half life of Pu-239 is 2.4 x 10^4 years, how many years are required for a 20-gram sample of... i know that the half life of strontium 90 half-life is 28.8 but how can i explain this??? The half-life for the first-order decomposition of is 1.3*10^-5. N2O4--> 2NO2 If N2O4 is int... If the half life of Ir - 131 is 42 days, how much would be remaining after 168 days? Given that the half life of c 14 is 5,700 ,use the method c 14 dating to determine the age of a fos... Beryllium-7 has a half-life of 53 D. A sample was observed for one minute and there were 26,880 deca... Carbon-14 has a half-life of 5700 years. In a living organism, the ratio of radioactive carbon-14 t... The half-life of 232Th is 1.4 * 10^10. Find the number of disintegrations per hour emitted by 1 mil... Radium-221 has a half-life of 30 s. How long will it take for 95% of a sample to decay If the half-life of iodine-131 is 8 day, how much would remain undecayed after 8 day if we started w... The half-life of Palladium-100 is 4 days. A lab is working with a sample of with 3250mg. Write a fun... The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced t... A half-life of mercury-195 is 31 hours. If you start with a sample of 5.00g of pure mercury-195, ho... Question The half-life of uranium-238 is 4.5 × 10^9 years. The half-life of uranium-234 is 2.5 ×... The​ half-life of​ carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree show... the half-life of tritium is 12.26 y what would be the decay of tritium atoms per second in 1.00 L... indium-115 has a half life of 4.5 hours, if you start with a 12.0mg sample of indium-115, how much w... Gold-198 with a half life of 2.6 days is used to diagnose and treat liver disease. Write a half life... The half-life of krypton-91 ^(91Kr) is 10 seconds. At time t = 0 a heavy canister contains 6 g... Fluorine-20 has a half-life of 11.0 s. If a sample initially contains 49.0 μg of this isotope, how m... A half life of a certain radioactive is 36 days. An initial amount of the material has a mass of 487... When the half-life of uranium U232 92 for 74 years . What is the percentage remaining after 10 years... The half-life for radioactive decay of 14C is 5730 years (it emits β-particles with energy of 0.16... The half-life of 131I is 8.021 days. What fraction of a sample of 131I remains after 24.063 days?... The half-life of tritium is approximately 12 years. What will be the molar ratio of tritium to heliu... Carbon-14 has a half-life of 5700 years. The charcoal from a tree killed in the volcanic eruption... The half-life of lead is 22 years. How long will it take for a sample of this substance to decay... the half life of an element is 5 days. if we have 10gram of the element initially. what is the mass... Strontium-90 has half-life of 28 years. if a 1.00-mg sample was stored for 112 years. what mass of S... Radon-22 has a half life of 4 days. If you begin with 32 grams of radon, how many grams will be lef...