Complete the table for the radioactive isotope. Isotope 239 Pu, Half Life (In years) 24100, Initial Quantity________ Amount after 1000 years 2.1g, Amount after 10000 years________.

Q: Iodine-125 is a radioactive isotope commonly used in medicine. It has a half-life of 59.5 days. A…

A: Half life of iodine -125 = 59.5 daysInitial amount of iodine -125 = 2.00 kgFinal amount of iodine…

Q: Consider a radioactive sample with a half-life of one week. How much of the original sample will be…

A: Half-life period is defined as the time taken for amount of the sample to reduce to half of its…

Q: A 116.8 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A: Given- Initial amount=116.8ng Final amount=14.60ng Time=47days

Q: A sample of a radioactive metal starts with a mass of 400 grams. When a chemist examines it later,…

A: 25 g of metal remains after 4 half-lives.

Q: Age of the Earth. Suppose that at the formation of the Earth there were equal amounts of 235U and…

A:

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: The spontaneous breakdown of the nucleus causes the release of energy and matter from the nucleus,…

Q: Strontium-90 is radioactive and has a half life of 28.8 years. What percentage of a sample would be…

A:

Q: A radioactive isotope has a half-life of 11 minutes.  How many grams of a 18.68 g sample remain…

A: Given Half life = 11minutes = 11*60= 660 second Sample weight = 18.68g Time = 44 minutes = 44*60=…

Q: You are studying a sample of granite that is about 2.1 billion years old. You know it contains some…

A: Here granite containing uranium -235 is formed 2.1 billion years old. We have to determine the…

Q: The isotope of iodine with mass number 128 undergoes beta decay with a half-life of 25.00 minutes.…

A: As the iodine undergo radioactive decay , it obey first order reaction . By using the half life…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

A:

Q: What mass of plutonium-240 will remain after 32,820 years if the initial sample contained 4.8 g of…

A: We know nuclear decay follows First order kinetics. we have to use the formula - t12=ln2K from this,…

Q: A radioactive substance has a ​half-life of 437 years. What is its decay​ rate?

A: Radioactive Decay: Radioactive decay is the property of the several naturally occurring elements as…

Q: In a sample of a radioactive isotope, 20.0 % has decayed after 16.0 days. Calculate the half-life of…

A:

Q: In a sample of a radioactive isotope, 20.0 % has decayed after 30.0 days. Calculate the half-life of…

A: The nuclear reactions are a type of chemical processes which lead to the formation of some new…

Q: A certain radioisotope has a half-life of 6.58 days. What percentage of an initial sample of this…

A:

Q: At a certain instant, 100 grams of radioactive substance is present. After 20 years, 99.76 grams…

A: The half-life is the time required to change the initial amount to half of the amount. It is denoted…

Q: Strontium-90, a beta emitter, has a half-life of 28.1 yr. If 38.9 mg of ⁹0Sr were incorporated into…

A: The first step in solving this problem is to determine the decay constant, which is given by the…

Q: A 993.3 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A:

Q: alf-life of a radioactive substance is 3.8 hrs. After how many hours 30% of its original value…

A:

Q: A 604.7 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A:

Q: The half-life of radium is 1620 years. If a laboratory has 32 grams of radium, how long will it take…

A: Data

Q: The half-life of a radioactive material is 18.23 hours. If you measure 59.33 grams of the sample…

A:

Q: A radioactive sample contains 2.90 gg of an isotope with a half-life of 3.8 days How much of the…

A: Given- Initial mass = 2.90 g Half life = 3.8 days To find- mass of the isotope in grams remaining…

Q: lodine-125 is a radioactive isotope commonly used in medicine. It has a half-life of 59.5 days. A…

A: Given,

Q: A 180.9 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A:

Q: PET studies require fluorine-18, which is produced in a cyclotron and decays with a half-life of…

A: The decay process has an exponential decay, which in this case means that every 1.83 hours, half the…

Q: 3. Suppose a sample of carbon-243 has a half-life of 3427 years. How long does it take for 80% of a…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: 21083Bi→42He +20681Tl + ________ Complete the nuclear equation above. alpha particle beta particle…

A: The reaction given is, => 21083Bi→42He +20681Tl + AZX

Q: After 60 days, 10 grams of radioactive isotope remains from an original 38 g sample. What is the…

A:

Q: A certain radioisotope has a half-life of 9.54 days. What percentage of an initial sample of this…

A:

Q: lodine-125 is a radioactive isotope commonly used in medicine. It has a half-life of 59.5 days. A…

A:

Q: A 371.9 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A: On passing a half life the concentration of the substance becomes half. Let the substance has passed…

Q: Iodine-125 is a radioactive isotope commonly used in medicine. It has a half-life of 59.5 days.…

A:

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.