Q2: a- Calculate the radius and volume also the density of Gold Nuclei (Au). b- The radioactive nucleus Ra has a half-life of approximately 1.6 103 yr. Given that the Solar System is about 5 billion years old, why do we still find this nucleus in nature? 197 226

Q: Questlen ? Technetium-99, a radioactive tracer used in medicine has a half life of 14.6 hours. How…

A: Given, Half-life ( t1/2) = 14.6 hours

Q: Polonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128…

A: Radioactive decay refers to the breakdown of an unstable nucleus to a stable nucleus with the…

Q: A 1.50 x 10-6 M solution of Khal Drogo’s potion was prepared by Daenerys in 1948 to make him…

A:

Q: Radium-226 is radioactive and has a half life of 1600. years. How long would it take a sample to…

A:

Q: . Barium – 122 has a half-life of 2 minutes. Suppose you obtain a sample weighing 10.0 g and it…

A:

Q: Torgeir is on a geology field trip and finds a meteorite that contains 10 times more argon-40 than…

A: Radioactive decay of material follows first order kinetics.  Half life is defined as the time…

Q: 25. Iodine-131 is a radioactive substance that can be used to treat certain thyroid conditions. It…

A: Q25) Given that: Half life = 8 days Mass of Iodine = 40 mg Remain after 4 half lives = ?

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

A: ★ Answer : 13.712 mg of Gallium-67 remains after 112 hours. ★ Solution :

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. How long would it take a sample to decay…

A:

Q: The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is…

A: Amount of rubidium = 123.0  μg  Amount of strontium = 5.5 μg Half life time of rubidium = 4.8 × 1010…

Q: The radioactive element carbon-14 has a half-life of 5750 years. A scientist determined that the…

A:

Q: 6C has a half life of 5,730 years. How many 6C atoms would you need in order to measure an average…

A: The half life is given as 5730 years Average Decay per Second = 10

Q: How many protons does Promethium-145 have? b). How many neutrons does Promethium-145 have?…

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: Tritium, H, is more commonly known as fusion fuel but is itself relatively unstable, with a…

A: Unstable nuclei undergo radioactive decay process by the emission of highly energetic particles ,…

Q: 15. Scientists use carbon dating to determine the age of fossils. 14C is a rare isotope of carbon…

A: Answer - The correct option is (A) 14C and 14N have the same    -   Atomic mass    The atomic number…

Q: The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is…

A:

Q: This exercise uses the radioactive decay model. The half-life of strontium-90 is 28 years. How long…

A:

Q: (Q111) In the next step of the neptunium-237 decay series, very unstable francium-221 is produced.…

A:

Q: Cesium-137 undergoes beta decay and has a half-life of 30.0 years. Determine the number beta…

A: The rate of the reaction is referred to as the change in the molar concentration in a distinct…

Q: Elemet x decays radioactivity with a half life of 14 minutes . if there are 920 grams of elment x ,…

A: A numerical problem based on the concept of half-life period which is to be accomplished.

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

A:

Q: Radioactive isotopes can be used to calculate the age of materials because their decay rates are A…

A: Interpretation - To tell about radioactive isotope can be used to calculate the age of materials…

Q: 100- Using the graph to the right, answer the following questions. 90- 80- 4. What is the half-life…

A:

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. What percentage of a sample would be…

A: Half-Life =12.3 years Time =13.0 years

Q: A certain radioactive isotope has a half-life of 10 years. How long will it take a 250 gram of this…

A: Given that half life of isotope is 10 years.

Q: How old is a skeleton that has lost 40% of its carbon-l4? Use 5,73A years as the half life of…

A: NOTE : There is a typing error in the half life of C-14 It will be 5730 year

Q: Carbon-14 (14C) is a radioactive isotope of carbon that has a half-life of approximately 5730 years,…

A: Radioactivity is a phenomenon that occurs in isotopes, where, the unstable nucleus of the isotopes…

Q: Carbon-14 is a radioactive element with a half-life of about 5,730 years. Carbon-14 is said to decay…

A:

Q: 203.) The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This…

A:

Q: lodine-131, a radioactive substance that is effective in locating brain tumors, has a half-life of…

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: Cobalt-60 is radioactive and has a half life of 5.26 years. What percentage of a sample would be…

A: For the reaction - A   +     B      →      C     +      D Rate = KAnBm where n and m are order of A…

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: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 77.1 g of ³2P, how…

A:

Q: Technetium-99 (half-life = 6.01 h) is used in medical imaging. How many half-lives would go by in…

A: Given that technetium - 99 have a half life of 6.01 hours

Q: A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This…

A: Given: Half-life of isotope = 4.75 × 1010 years. And the ratio of 87Sr to 87Rb = 0.15

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

A:

Q: Can someone help me solve these problems?

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

Q: Sodium is an artificial isotope with a half-life of 2.6 years a.) How many protons are in an atom…

A: Given Sodium-22 is an artificial isotope with a half life of 2.6 years. a) Number of protons are in…

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

A: Given Initial amount (N०) = 8.00 g Half life (t1/2) = 14 days time (t) = 42 days

Q: Dinosaur fossils are often dated by using an element other than carbon, like potassium-40, that has…

A:

Q: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 30.9 g of "P, how…

A: The given information is: Half-life = 14.3 days Mass of 32P currently present = 30.9 g Since it is a…

Q: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 48.9 g of "P, how…

A:

Q: A chemist determines that a sample of petrified wood has a carbon-14 decay rate of 6.00 counts per…

A: Record the given data, Initial Carbon-14, No = 13.6 CPM per gram Nt = 6.00 CMP per gram Half-life t…

Q: The noble gas radon has been the focus of much attention because it may be found in homes. Radon-222…

A: Write the balanced equation of Rn-222 on alpha decay ?

Q: radioactive isotope has a half-life of 38.4 days. What percent of the original sample remains after…

A: The unstable nuclei or unstable isotope undergoes radioactive disintegration to form stable nuclei.…

Q: A rock contains the radioactive isotope K − 40 that decays with a half-life of 1.3 billion years and…

A: Answer: Nuclear reactions are first order reactions, therefore integrated rate law of first order…