half-life of this isotope?

Q: What mass is lost over 24 hours of 1.8 * 1014 kJ/s of energy radiation?

A:

Q: 2. A sample of iodine-126 with an original mass of 15.00 mg loses 13.125 mg of the original mass of…

A: When the quantity is reduced to one-half of the original of a radioactive sample, then the time…

Q: If the amount of a radioactive element decreases from 0.36 g to 90. mg in 22 min, what is its…

A: Half-life (t1/2) is defined as the time required by a substance to reduce to half of its initial…

Q: An 16 g sample of an isotope of Strontium-90 was formed in 1960 explosion of an atomic bomb at…

A: In what year will only 0.625 gm of strontium 90 remain?

Q: A radioactive sample contains 1.55 g of an isotope with a halflife of 3.8 days. What mass of the…

A: Given details, t1/2 = 3.8 days t = 5.5 days m0 = 1.55 g To calculate the mass of the isotope. By…

Q: The Br-82 nucleus has a half-life of 1.0 x 103 min. If you wanted 1.0 g Br-82 and the delivery time…

A: The radioactive decay of Br-82 is an example of first order reaction. The rate constant of the…

Q: The isotope 208 Tl undergoes Beta- decay with a half-life of 3.1 minutes. Calculate the amount…

A: Given, T208I undergoes beta decay. T1/2= 3.1 min initial concentration , CA0= 41.4 g time , t =…

Q: If the amount of a radioactive element decreases from 2.4 g to 0.30 g in 12 days, what is its…

A: Given: Initial amount of radioactive element, N∘=2.4gFinal amount of radioactive element, N =…

Q: If the half-life of 100.0 grams of a radioactive isotope is 8 years, how many grams will remain in…

A:

Q: A 1.55 g sample of an isotope has a half-life of 3.8 days. What mass of sample is left after 5.5…

A: given data,sample of an isotope or initial amount of sample =1.55 g sample half life =3.8…

Q: [Refere A 1.14 g sample of a radioactive isotope decays to 0.87 g in 36.3 hr. What is the half-life…

A: Given  Initial Amount [ A ]0   = 1.15 gram  Remaining Amount [ A ]    = 0.87 gram  Time ( t ) = 36.3…

Q: Complete the table for the radioactive isotope. Isotope 239 Pu, Half Life (In years) 24100, Initial…

A: The amount of time required by an element to reduce to half its quantity is called its half-life.

Q: How much energy must be supplied to break a single aluminum-27 nucleus into separated protons and…

A: Mass of Al-27 nucleus = 26.9815386 amu Mass of proton (mp) = 1.00728 amu Mass of neutron (mn) =…

Q: An ancient skull has a carbon-14 decay rate of 0.85 disintegration per minute per gram of carbon…

A: It's a nuclear decay reaction. Therefore, it will follow first order kinetics. And since it is…

Q: How much (in grams) of a 17.2-g sample of some radioactive element (half-life of 4 days) remains…

A: The given mass of the substance =  17.2 g The half-life of the substance (t1/2) = 4 days Time…

Q: 4. The half-life of bismuth-212 is 1 hour. If 12g of bismuth are allowed to decay, what mass of…

A:

Q: A theoretical isotope X-100 has an initial mass of 500g. This isotope has a half-life of 8 hours.…

A: GivInitial mass=500g Half life=8 hours

Q: 2) If 20.0 g of a radioactive isotope are present at 1:00 PM and 5.0 g remain at 2:00 PM, what is…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Complete the table for the radioactive isotope. Isotope 239Pu, Half Life (In years) 24100, Initial…

A: Radioactive decay reactions are first order reactions. Nt = Noe-λt        (equation1) No - Initial…

Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 × 1010 years. What is the…

A: Radioactive decay reactions follow first order kinetics.

Q: Carbon -14 has a half-life of 5.730 x 10 3 years.  If the original mass of the parent is 501.695 g,…

A:

Q: 100.0 grams of an isotope with a half-life of 36.0 hours is present at time zero. How much time will…

A: Radioactive decay follows first order kinetics. Given that half life is 36 hours. So the rate…

Q: Iodine-131 has a half-life of 8.04 days. If you begin with 2.7 mg of radioactive "I what mass…

A: Half-Life: The half-life of a radio active material will tell us the time it takes for one-half of…

Q: A 4.0 g sample of Ra-226 decays to 1.0 g. If the half-life of Ra-226 is 1620 years, how much time…

A: Given initial concentration of Ra-226 = [Ra-226]0 = 4.0 g  Final concentration = [Ra-226] = 1.0 g…

Q: In the next step of the neptunium-237 decay series, very unstable francium-221 is produced.  Given…

A: Here we are required to find the amount of Francium 221 remain after 7.32 minutes.

Q: A sample of iodine-126 with an original mass of 15.00 mg loses 13.125 mg of the original mass of the…

A:

Q: The half life of bismuth-213 is 46 minutes.  How much of a 20 g sample of bismuth-213 is left after…

A: The unstable nucleus or isotope undergoes radioactive decay to form a stable nucleus. This process…

Q: 3 Carbon-14 has a half life of about 5,730 years. If an archeologist examines a bone and finds 6.25%…

A: Given :  Half life of C-14 = 5730 years  % of C-14 = 6.25 %

Q: An 22 g sample of an isotope of Strontium-90 was formed in 1960 explosion of an atomic bomb at…

A:

Q: After 40.0 days, how much Ac-225 remains if the starting mass was 94.0 g? Ac-225 has a half life of…

A:

Q: 2P is a radioactive isotope with a half-life of 14.3 days. If you currently have 13.5 g of ²P, how…

A: The given data contains, t1/2 =14.3 daysPt=13.5 gP0=7 days

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: 32p is a radioactive isotope with a half-life of 14.3 days. If you currently have 32.7 g of 32P, how…

A:

Q: A chemist wishing to do an experiment requiring "Ca²+ (half-life = 4.5 days) needs 5.0 µg of the…

A: Given,  Half-life, t1/2 = 4.5 days  Time, t = 96 h = 4 days  Current quantity, N = 5 μg  Original…

Q: b- The radioactive nucleus Ra has a half-life of approximately 1.6 103 yr. Given that the Solar…

A: Radioactivity is basically a first-order reaction. A first-order reaction means the rat of the…

Q: . A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were produced.…

A:

Q: In a 3 X 109 -year-old rock that originally contained some 238U , which has a half-life of 4.5 X 109…

A: Half-life is defined as the time in which the original numbers of nuclei are decayed to half. In the…

Q: A chemist wishing to do an experiment requiring 4"Ca2+ (half-life = 4.5 days) needs 8.0 µg of the…

A:

Q: 0 Question 9 180pb has a half-life of 25.5 s. If a sample of this isotope is initially 750.0 g, what…

A:

Q: An alpha particle is accelerated to 23.1 MeV per particle. What is this energy in kJ/mol?

A:

Q: An ancient skull has a carbon-14 decay rate of 0.85 disintegrations per minute per gram of carbon…

A: An ancient skull has a carbon-14 decay rate of 0.85 disintegrations per minute per gram of carbon…

Q: A radioactive isotope has a half-life of 10,000 years. How old is the rock if the ratio of…

A: Ans

Q: The radioactive isotope *Pa decays by beta emission. 234 If the mass of a sample of protactinium-234…

A: Initial mass of isotope M = 83.5 ug Final mass of isotope M' = 20.9 ug  Time of decay t = 13.5 hours…

Q: A rock started with 4000 atoms of a parent radioactive isotope and now has 3750 daughter isotopes.…

A:

Q: The 175Pt isotope has a half-life of 2.53 seconds. What percentage of the original quantity of 175Pt…

A: The radio active decay follows first order kinetics. The half life t1/2 and rate constant K of a…

Q: When will a 1.00 g sample of thorium–232 have a mass of 1.00 mg, knowing that the half – life of…

A:

Q: In a 3×109 -year-old rock that originally contained some 238U , which has a half-life of 4.5×109…

A: Since 238U has a half-life of 4.5 × 109 y, it is useful for dating only very old materials, showing,…

Q: How many alpha particles are emitted per minute by a 0.0010-g sample of 238U that has been freshly…

A: Given, Mass of sample = .001 g Half life of uranium = 4.47 x 109 years = 4.47 x 109 x 3.156 x 107…

Q: 1. Gold-191 has a half life of 12.4 hours. What mass of this isotope would remain after 49.6 hours…

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.