The half life of 123I is 13 hr.  How much of a 64 mg sample of 123I is left after 26 hours?

Q: Sodium-24 has a half-life of 14.8 hours. How much of a 587.7 mg sodium-24 sample will remain after…

A: All radioactive decay processes follow first order kinetics.

Q: Lead-210 has a half-life of 22.3 years.   a) How much of a 102-mg sample would be remaining after…

A: Half life period is given by t1/2=0.693k Where, k is rate constant.

Q: Krypton-79 has a half-life of 34.50 h. After 138.0 h, 54.25 kg of this radioistope is left. How much…

A: Given, the half-life of Krypton-79 is 34.50 hthe amount of radioisotop left after 138.0 h is 54.25…

Q: The half-life of radioactive chromium-51 is 28 days, If a sample of chromium-51 has a mass of 12.0…

A:

Q: The half life of 15O is 122 seconds. If you start with a sample of 400g how long will it take to end…

A: Radioactive decay follows first-order kinetics. Hence, the integrated rate law for the radioactive…

Q: Cobalt-60 has a half-life of 5.3 years. How many half-livesoccur after 21.2 years?

A: Generally, a radioactive decay reaction takes place as a first order reaction.  In a first order…

Q: Gold-198 is used in the diagnosis of liver problems. If the half-life of Au-198 is 2.69 days: b. If…

A: Half life = 2.69 day Initial amount = 9.21 mg  Time = 72.9 days

Q: Co-60 is used extensively in radiotherapy. Its half-life is 5.27 years. How many years will it take…

A:

Q: The half-life of Radium-226 is 1600 years. If 30 grams are left after 8,030 years, how many grams…

A: Radioactive decay follows first order kinetics.  k = 0.693/t0.5  Or, k = 0.693/1600 year^-1 =…

Q: The answer should be 26.7 days

A: Half-life:The time taken for half disintegration of radioactive element from its original amount is…

Q: The half-life of Po-218 is 3.1 minutes. How many grams of Po-218 would be left after 9.3 minutes, if…

A: M

Q: The isotope Bismuth-212 has a half life of 368.65 day. What mass in mg of a 2 mg sample will remain…

A: Half life of Bismuth, t1/2 = 368.65 days. Bismuth-212 is a radioactive element. Thus, it will follow…

Q: The half life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain…

A: given :-  initial amount of sample = 500 mg  half life = 1590 years  To calculate :-  amount of…

Q: The half-life of mercury-203 is 46.6 days. What percentage of mercury-203 remains in a sample after…

A:

Q: After 119 days have elapsed, 1/12 of a radioisotope sample remains undecayed. What is the half-life…

A: Amount of radioisotopes remaining = 112 of the initial amount Number of days taken for the decay =…

Q: Gold-198 has a half-life of 2.7 days. How much of a 344.7 mg gold-198 sample will remain after 13.5…

A: Given data: Half-life of Gold-198 (t1/2)= 2.7days Initial amount of Gold-198(A∘) = 344.7 mg Time for…

Q: The half-life of protactinium-231 is 3.25 x 104 years. How long will it take for 43.4 grams of…

A: Find out the time period by using the formula, Where,              Ao = Initial amount  At = Amount…

Q: Krypton-85 has a half life of 10 years. Approximately what percentage of Kr-85 produced from the…

A:

Q: Cesium-134 is a β emitter with a half-life of 2.0 years. How much of a 2.50-g sample of cesium-134…

A: The radioactivity decay follows the first order kinetics. The formula for the first order kinetics…

Q: The half-life of 123I is 13 hr.  How much of a  64 mg sample of 123I is left after 26 hours?

A: The isotope of iodine, 123I, undergoes decay in accordance with first order kinetics. The half-life…

Q: The half life of radium -226 is 1590yrs . If a sample contains 400mg, how many mg will remain after…

A: Given;

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32P, how many grams will remain…

A:

Q: The half life of radium 226 is 1602 years. If you have 500 grams of radium today how many grams…

A:

Q: If we begin with 5.00 mg of iodine-131 (t1/2 = 8.07 hr), how much remains after eight half-life…

A:

Q: Radium-221 has a half life of 30 seconds. How long will it take for 82% of a sample to decay?

A: Half life =30 seconds Decay percentage = 80%

Q: The half-life of Po-214 is 0.001 seconds. How much of a 10 gram sample is left after 0.003 seconds?…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

Q: Gold-198 has a half-life of 2.7 days. How much of a 275.1 mg275.1 mg gold-198 sample will remain…

A: All radioactive disintegration follows 1st orderkinetics.For 1st order reactionK=1t in AoAtK=Rate…

Q: Cobalt-60 is a beta-emitter used in radiation cancer treatment equipment in hospitals. What total…

A: Given Initial mass = 24 g half life = 5.33 years time = 16 years

Q: 1. If gallium - 68 has a half-life of 68.3 minutes, how much of a 160.0 mg sample is left after 1…

A: One half life is that time in which half of the radioactive substance gets decayed.

Q: How long does it take for 105 mg of tritium H to decay to 35.0 mg? The half-life of tritium is 12.3…

A: All radioactive decays are first order reaction.

Q: Half life iridium 192 is 106.51 days. How many days are required for 60 mg to decay to 7.5 mg

A:

Q: II 24 Iours, what is the half-life of Ra-226 in years? 27 3. Arsenic - 70 has a half life of 140…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: The half-life of copper-67 is 61 hours.  If an original sample contains 24 grams how many grams are…

A:

Q: The half-life of a radioactive element is 8 days. How long will it a 1.0 g sample to decay to 0.0625…

A: Radioactive decay is the process of breakdown of radioactive matter. The atomic nucleus is broken…

Q: The first order decay of radon has a half life of 3.823 days. How many grams of radon remain after…

A: The time at which first order decay of radon takes place is 3.823 days.   The initial weight of…

Q: Plutonium-239 has a half life of 2.41x10* yr. If you have a 10.0 mg sample how much will remain…

A: The time where any substance/element gets remained just half of its actual quantity is considered as…

Q: The half-life of Po-214 is 0.001 seconds. How much of a 10 gram sample is left after 0.003 seconds?…

A: We know radioactive decay follows first order reaction kinetics, therefore  t1/2=0.001 s and…

Q: lodine-131 has a half-life of 8 days. How much of a 1000 mg sample would be left after 24 days? O…

A:

Q: The half-life of 98AU is 2.7 days. If you begin with 5.6 mg of this gold isotope, what mass remains…

A: Half-life is the time required for the reaction to be half completed. It is denoted by t1/2 . For a…

Q: Sodium-24 has a half-life of 14.8 hours. How much of a 595.7 mg sodium-24 sample will remain after…

A: Radioactivity are 1st order reaction- given T1/2=14.8 hourk=0.693t12⇒0.69314.8 hour=0.0469 hour-1

Q: The half-life of sodium-24 is 15.0 hr. How many grams of this nuclide in a 3.00-g sample will remain…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: The half life of radium-226 is 1600 years. How many grams of a 0.25g sample will remain after 4800…

A: After decying the nucleus it emits radiation of electromagnetic rays ,of certain Wavelength.

Q: Cs – 137 has a half life of 30.2 years. How many years will it take for a 100.0 g sample to decay to…

A:

Q: How much of a 24 gram sample of radium 226 will remain unchanged at the end of three half life…

A: Given, sample of radium-226 has mass of 24 gram.

Q: If 600,0g of 14C decays after 3 half lifes, how much of the sample would remain ( in grams)?

A: Recall the following relation to calculate amount of radioactive sample remain after a definite time…

Q: A patient is given a 0.05 mg dose of Tal which has a half-life of 6 hours. How long will it be until…

A:

Q: Thallium-201 is used medically to diagnose heart problems. The half-life of thallium- 201 is 72.9…

A:

Q: The radioactive nuclide Co has a shelf-life of 17.5 hours. What mass Co remains from 0.0100g sample…

A: