Search: Half life of radium is

The half-life of Radium-223 is 11.43 days. If a sample has a mass of 900 mg, find the mass (i... the half life radium-222 is 4 days. if a sample of radon-222 undergoes decay for 12 days, how much o... The half-life of Radium-226 is 1590 years. If a sample contains 100 mg, how many mg will remain afte... Radium-223 has a half-life of 11.4 days.Approximately how long would it take for the activity of a s... The half-life of Radium-223 is 11.43 years. What is the annual decay rate? Express the result to fou... Radium-221 has a half-life of 30 s. How long will it take for 95% of a sample to decay The half life of radium is 3.82 days.In what time will the activity decay to 1/16 of its original va... If Radium-223 has a half life of 10.33 days, what time duration would it require for the activity as... the half-life of a radium is 1690 years is 90 grams is present now, how much will be present in 70 y... The half life of radium is 1590 yrs. how long will it take to 1 gm of element to loose 0.1gm. full s... Half life of radium is 44 years.The sample will reduce to 50% of its orignal value ater how many yea... The half life period of radium is 1600 years.In how many years 1 gram of radium lose 1 centigram?? The half life of radium is 1590 yrs. how long will it take to 1 gm of element to loose 0.1gm the half life of radium is 1600 years of 100 grams of radium existing now 25 grams will remain after... Radioactive radium has a half-life of approximately 1599 years. What percent of a given amount remai... The half-life of I-131 is 8.00 days. If a medical treatment involves a dose of 400. mg of I-131, how... The half-life for the first order reaction of a substance A is 50.5 s. How much time is needed for t... 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... 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 Pu-239 is 2.4 x 10^4 years, how many years are required for a 20-gram sample of... The half-life for the second-order reaction of a substance A is 55.8 s when concentration of initial... K-42 has a half-life of 12.4 hours. If you begin with 250g of K-42, determine how much you will hav... If the half-life of a first-order decomposition reaction is 24.2 minutes, how long will it take for... 1. What is the half-life of Strontium-90? Explain your answer. Honestly I don't know how to get t... The half-life for the first-order conversion of A to B is 56.5 hours. How long does it take for the... If C14 has a half-life of 4,000 years, what fraction will be remaining after 36,000 years? If I 131 has a half-life of 8 days, what fraction will be left after a year? The​ half-life of a certain radioactive element is about 1500 years. After 2800 ​years, what per... What is the half-life of an isotope if it decays to 12.5% of its radioactivity in 18 minutes? 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 nuclide 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... 1. The half-life for the (first-order) radioactive decay of 14C is 5730 yr (it emits a β ray wit... What is the half-life of the element Lokium? 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 for the first-order decomposition of is 1.3*10^-5. N2O4--> 2NO2 If N2O4 is int... Consider that the half-life of Polonium-210 is 140 days.What approximate daily percentage of decay d... 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 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 the following first order reaction is 231 seconds. What percent of the original con... 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 of P-32 is 14 days. How long after a sample is delivered can a laboratory wait to use... 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 Am-241 is 432 y. If 2.00 g of Am-241 is present in a sample, what mass of Am-241 is... What is the half-life (in h) for the decomposition of O3 when the concentration of O3 is 2.37 ✕ 10−6... 1. The half-life of a first-order reaction is 9.89 minutes. How many minutes will have elapsed after... The half-life (t1/2) of a first order reaction is 0.100 s. What is the rate constant? a. 6.93 s-1... If the half life of Ir - 131 is 42 days, how much would be remaining after 168 days? i know that the half life of strontium 90 half-life is 28.8 but how can i explain this??? If the half-life of a certain radioactive substance is 2000 years, estimate how many years must elap... Given that the half life of c 14 is 5,700 ,use the method c 14 dating to determine the age of a fos... the half-life of cobalt-60 is 5.20 years.. how many milligrams of a 2.000-mg sample remains after 6.... Plutonium-239 has a half-life of 24 000 years. What percent of plutonium-239 remains after 10 000 ye... If radon-222 has a half-life of 3.8 days, determine how long it takes for only 1/8 of a sample to re... The half-life of sodium-24 is 14.9 hours. A hospital buys a 40 mg sample of sodium-24. a) How many... The half-life of strontium-90 is 28 years. How long will it take a 60 mg sample to decay to a mass o... Aluminum-30 has a half-life of 3.6 seconds. a) What percentage of an initial sample will remain aft... The half life of a radioactive sample is 6.93 days.after how many days will only one -tenth of the s... If the half-life of iodine-131 is 8 day, how much would remain undecayed after 8 day if we started w... does the half life formula t=ln2/k give sec as unit or min as unit Potassium-42 has a half-life of 12.4 hours. How much of a 1600g sample of potassium-42 will be left... The half-life of radon-222 is 3.82 days. If a sample of gas contains 4.38ug of radon-222, how much w... The half-life of oxygen -15 is 124 seconds. If a sample of oxygen -15 has an activity of 4000 becque... Cesium-137 has a half life of 30.0 years. If initially there are 8.0 kg of cesium-137 present in a... if the half life of a radiosotope is 10years,starting with 80 atoms of this isotope,how many atoms w... The half-life of a radioactive material is about 34.6 years. How much of a 1-gram sample of the mate... A certain drug has a half-life of 2 hours in the bloodstream. The label says to take the drug every... When the half-life of uranium U232 92 for 74 years . What is the percentage remaining after 10 years... 1. What is the range half-life of the element Lokium? * 2 points 1-3 trials 4-7 trials 11-12 tr... If the half life of a reaction A is 2 mins,how long will it take A to reach 25% of its initial conce... Tritium (half-life = 12.3 y) is used to verify the age of expensive brandies. If an old brandy conta... assume the half-life of the substance is 31 days and the initial amount is 183.9 grams. (a) Fil... indium-115 has a half life of 4.5 hours, if you start with a 12.0mg sample of indium-115, how much w... Carbon-14 has a half-life of approximately 5,730 years. How many half-lives have occurred in a sampl... Fluorine-20 has a half-life of 11.0 s. If a sample initially contains 49.0 μg of this isotope, how m... half life of tritium is 12.5 years. how much will remain after 100 years if you started wit 256 gram... The half life of a radioactive material is 120 months. How much of this material will be left after... Strontium-90 has half-life of 28 years. if a 1.00-mg sample was stored for 112 years. what mass of S... The half-life of Strontium-90 is 28 a. If 60 g of this isotope is currently in a sample of soil, est... The half life of an element Z is 10days. if there are 10g of Z intially, what will be its mass after... Iodine-131 has a half life of eight days. What mass of iodine-131 would remain from a 20g sample aft... iodine 131 has a half life of 8 days. If 5 mg are stored for a week, how much is left? How many days... How do you find the half life of strontium 90? I know that the answer is 28.8 years but how do yo... The half-life for the process 238U 206Pb is 4.5 109 yr. A mineral sample contains 45.9 mg of 238U an... The half-life of an element is important for determining the _______ of a rock. A. relative age B.... The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced t... Explain how the half-life of a radioactive isotope affects the usefulness of that isotpe in dating s... What is the half-life of a compound if 69 percent of a given sample of the compound decomposes in 59... the half life of an element is 5 days. if we have 10gram of the element initially. what is the mass... The half-life of krypton-91 ^(91Kr) is 10 seconds. At time t = 0 a heavy canister contains 6 g... Gold-198 with a half life of 2.6 days is used to diagnose and treat liver disease. Write a half life... Radon-22 has a half life of 4 days. If you begin with 32 grams of radon, how many grams will be lef... the half life of a radioactive substance is one day. You have 100 grams. how much of the substance w... If the sample has a half life of 5 seconds, how much is left after 25 seconds? 12.5% 25% 3.... Carbon-14 has a half-life of 5700 years. The charcoal from a tree killed in the volcanic eruption... The half-life of tritium is approximately 12 years. What will be the molar ratio of tritium to heliu... The half-life for radioactive decay of 14C is 5730 years (it emits β-particles with energy of 0.16... A half-life of mercury-195 is 31 hours. If you start with a sample of 5.00g of pure mercury-195, ho...