Number of years Mass of original Carbon 14 remaining (grams) Half-life 1 1/2 5,700 2. 1/4 11.400 1/8 17,100 3. 4

Q: In the year 2005, a picture supposedly painted by a famous artist some time after 1475 but before…

A: This is a question based on radiocarbon dating. Here we will use first order reaction rate to…

Q: Thorium-234 has a half-life of 24.1 days. Suppose the initial amount of Thorium-234 is 162.9 mg,…

A: All natural and artificial radioactive decays follows first order kinetics The integrated rate…

Q: P-32 is an unstable isotope of phosphorus that has a half-life of 14.29 days. Atoms of P-32undergo…

A:

Q: 4. Tritium has a half-life of 12.5 years. If you had a sample of 8.00g of tritium today, how many…

A: Half life (T) = 12.5 years  Time (t) = 37.5 years  Original sample (No) = 8.00 grams  Undecayed…

Q: The diagram below illustrates the radioactive decay of a sample of mercury-207. Use it to answer the…

A: Beta Decay During beta decay, the proton present in the nucleus gets transformed into a neutron and…

Q: The half-life of 234U, uranium-234, is 2.52 105 yr. If 98.9% of the uranium in the original sample…

A:

Q: The half-life of Oxygen-14 is 1.177 minutes.  You originally have 20 grams of it.  After roughly 3.5…

A: Given: Half-life of Oxygen-14 is 1.177 minutes Mass of Oxygen-14 is 20 g

Q: If you start with a 30 g sample of I-131, how many grams of I-131 would there be after 16 days?…

A: The initial amount of I-131 sample is .The time elapsed is .The half-life is .To find the amount of…

Q: A substance has a half-life of 2.045 minutes. If the  initial amount of the substance was 132.8…

A: Given,  Half-life, t1/2  = 2.045 minutes Initial ammount, A0 = 132.8 gram

Q: After 20 years, only 3.125% of the initial amount of radioactive isotope is left. What is the…

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: Gold-198 has a half-life of 2.7 days. How much of a 488.6 mg gold-198 sample will remain after 13.5…

A: We have half life as 2.7 days, we have initial amount as 488.6 mg, we have to calculate the sample…

Q: Bi-191 has a half-life of only about 12 seconds. A large radioactive sample contains only 6.2 x 109…

A: Half life of Bi-191 = 12 sNumber of atoms of Bi-191 = 6.2 x 109 atomsNumber of moles of Bi-191 = ?…

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 Po-218 is 3.1 minutes. How many grams of Po-218 would be left after 9.3 minutes, if…

A:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.4 g remain. What is the original…

A: The Answer to the following question is-

Q: Bi-191 has a half-life of only about 12 seconds. A large radioactive sample contains only 4.1 x 109…

A: Half life of Bi-191 = 12 sNumber of atoms of Bi-191 = 4.1 × 109 atomsNumber of moles of Bi-191 = ?…

Q: Krypton consists of several radioactive isotopes, some of which are listed in the following table.…

A:

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: You have a sample of Bismuth-212 to prepare for an upcoming medical test.  This isotope has a…

A: The radioactivity follows first-order kinetics. The half-life relates to the rate constant, k for…

Q: Plutonium 240, 240 24PU, has a half life of 6500 years. The new element formed after Plutonium 240…

A: While writing nuclear reaction the sum of mass number on reactant and product side are equal. Same…

Q: The half-life of tritium is 12.32 yrs. If 49.1 mg of tritium remains of a sample with an initial…

A:

Q: An unknown radioactive substance has a half-life of 3.20 hours. If  20.8 g of the substance is…

A:

Q: The half-life of Ga-67 is about three days. If only 12.5% of the original sample remains, the time…

A: The time at which reactant's amount is left half of the original amount is known as half-life. The…

Q: The half-life of tritium is 12.32 yrs.If 49.1 mg of tritium remains of a sample with an initial mass…

A: The question is based on the concept of chemical kinetics. we have to calculate how much time has…

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: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 62.7 g of 32P, how…

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: A scientist is taking measurements on an unknown isotope to determine its half life. If the…

A: Radioactive decay is followed first order kinetics  Decay constant                  λ =2.303t…

Q: Enter your answer in the provided box. A rock sample originally contains 4.79 mg of 238U. How much…

A: The question belongs to Nuclear Chemistry. We need to find how much lead will be in the rock sample…

Q: radioactive sample originally contains 8.0g of an isotope with a half- life of 6 days. What is the…

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: Certain radioactive isotope has a half-life of 3.9 minutes. If we initially have 7168 grams of this…

A: According to the question, we have: Half life of radioactive isotope = 3.9 minutes.  Initial mass =…

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.