203.) The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is the basis of a method for determining the ages of rocks. A sample of rock contains 122.0 μg^87 Rb and 6.1 μg^87 Sr . What is the age of the rock? The half-life of rubidium-87 is 4.8x10^10 y. There was no strontium-87 in the rock initially. Age =  y

Q: Indium-116 is radioactive and has a half-life of 14.10 seconds. How much of a 9.10 mg sample would…

A:

Q: The diameter of an iridium-191 nuclide is 9.2 femtometers (9.2 x 10-15 m). Using the estimate that…

A: Detail

Q: The carbon from the heartwood of a giant sequoia tree gives 11 ?614 counts per minute per gram of…

A:

Q: (1) The radioactive isotope chromium-51 is used in medical imaging as indicated on the table above.…

A: Answer: Unstable radioactive nuclide undergoes decay reaction through different methods to obtain a…

Q: Understanding the common modes of radioactive decay The table below lists information about the…

A: Step 1:  As you can see in this reaction, Tritium, has 1 proton and 2 neutrons, while Helium-3 has 2…

Q: As recently as the late 1970s, some wrist watches were manufactured using tritium (3H) as a…

A: t1/2 of 3H = 4500 days 43 years ago, a watch was purchased.

Q: A sizeable uranium deposit was found in northern Canada. When one kilogram of the uranium ore was…

A: Know Initial amount of uranium ore (a) = 1000 g Half life of uranium = 4,510,000,000 yrs Amount of…

Q: Ra-226 undergoes alpha decay and produced -4.8x10 kJ/mol of energy in the process. Determine the…

A:

Q: Positron sources are used in PET scans (PET = positron emission tomography), which are an important…

A: The objective of the question is to understand the nuclear changes that occur during the decay of…

Q: Enter the identity of the missing particle showing mass balance for the following nuclear decay…

A: Since you are asked for multiple questions, we are entitled to solve one only.

Q: A 0.0100 g sample of a radioactive isotope with a half-life of 1.3 × 10 years decays at the rate of…

A: Step 1: Firstly we need to find decay constant to find molar mass of isotope.We are given with half…

Q: 9.) Cesium-134 undergoes decay by B emission and has a half-life of 2.0 years. How much of a 3.50-g…

A: Given:                 Half life of Cesium-134 is 2.0 years                 Taken mass of Cesium-134…

Q: Radium-226 is radioactive and has a half life of 1600. years. How much of a 5.40 mg sample would be…

A: Radioactive isotope: Radium-226Half life (t1/2) = 1600 yearsInitially mass of Radium-226 =…

Q: 13N is more likely to undergo electron capture than alpha particle decay. Explain why

A: In brief the stability of a nucleus depends on n/p ration or n/z ratio (neutron to proton ration)…

Q: It takes 432 kJ to keep a 120 watt incandescent lightbulb burning for 1 hour . Assuming that the…

A: Calculated mass of 244Pu =Mass of protons + Mass of neutrons=1.007825(94) + 1.008665(150) u=246.0353…

Q: The type of nuclear decay an unstable nucleus will undergo depends on its ratio of neutrons to…

A: Given  For Co - 65    n/p     = 1.41  Changes if this ratio is reduced = ?

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: Rn-222 undergoes alpha decay and produced -6.7x109 kJ/mol of energy in the process. Determine the…

A:

Q: Match the Beta decay products of the following elements: Drag the boxes to match the answers 76Os…

A: Beta decay is a type of radioactive decay in which the ejection of fast moving beta particles from…

Q: (1) The radioactive isotope fluorine-18 is used in medical imaging as indicated on the table above.…

A: Answer: The unstable radioactive nuclides undergo decay reaction to have a stable daughter nuclei…

Q: Cesium-137 is radioactive and has a half life of 30. years. Calculate the activity of a 5.0 mg…

A: Here we are required to find the activity of 5mg of radioactive sample of Cs-137.

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

A: Given-> Half life = 78.2 hours Initial amount = 44.2 mg Time = 97.0 hours

Q: 2. The half-life of carbon-14 is 5,730 years. Express the amount of carbon-14 remaining as a…

A: The decay of carbon-14 follows an exponential decay model. The amount of carbon-14 remaining as a…

Q: Strontium-90 is radioactive and has a half life of 28.8 years. Calculate the activity of a 8.4 mg…

A: According to the question, The mass of the strontium-90 sample is given by = 8.4 mg The half-life of…

Q: Bi-209 undergoes alpha decay and produced -5.4x108 kJ/mol of energy in the process. Determine the…

A: We have to calculate the actual mass of TI atom.

Q: 29 3. What information cannot be determined from the symbol notation 14Si? O the atomic mass O the…

A: The symbol notation given is

Q: 128 Te undergoes an extremely rare form of radioactive decay know as double beta decay: 12TE - *Xe +…

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

Q: Q1: It has been planned to use Thorium fuel (Th232) in a nuclear power station instead of Uranium…

A: Solution MOLECULAR MASS OF THORIUM = 232 Therefore , 1 Mole of THORIUM consist of 232g of THORIUM 5…

Q: 3. Find the nuclear binding energy of uranium-234 (atomic mass = 234.040947 amu) in units of joules…

A:

Q: Calculate the effective radiation dosage in sieverts for 67-kg person who is exposed to 9.9 •10^9…

A:

Q: What is the age (in y) of mummified primate skin that contains 7.45% of the original quantity of…

A: All radioactive decays follow first order kinetics:

Q: Nearly all of the protons and neutrons in the seven-to-one ratio at t = 225 s either formed 4He or…

A: The relative abundance of a species with respect to another provides information about the percent…

Q: Be sure to answer all parts. A 'H nucleus decays with an energy of 0.01865 MeV. Convert this energy…

A:

Q: Bromine-88 is radioactive and has a half life of 16.3 seconds. What percentage of a sample would be…

A: t(1/2) = 16.3 secondst = 31.6 secondsA0 = 100% as the initial percentage of a sampleA =?

Q: Strontium-90 is radioactive and has a half life of 28.8 years. How long would it take a sample to…

A:

Q: Radium-226 is radioactive and has a half life of 1600. years. What percentage of a sample would be…

A: This problem is based on Nuclear Chemistry which is a subtopic of Chemical Kinetics.Here,…

Q: 233Np decays by a-particle emission and has a half-life of 2.20 × 10 years. (1 Ci= 3.70 × 10¹0 3.70…

A: mass of sample = 0.230 ghalf-life of Np(t1/2) = 2.20106 yearsMolar mass of Np = 237 g/mol1 Ci =…

Q: Americuium-241

A: From the given data, we can see that the initial amount of Americuium-241 in the smoke detectors is…

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

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

Q: lodine-131 is used to treat Graves disease, a disease of the thyroid gland. The amount of 131 used…

A: As per statement,   86 microcuries required per gram of thyroid gland, so for 23g of thyroid gland =…

Q: The type of nuclear decay an unstable nucleus will undergo depends on its ratio of neutrons to…

A: In radioactive nuclear decay, a radioactive nucleus is transformed into another atomic nucleus…

Q: One potential uranium fission reaction is shown below. 235U + n- 140BA + 93Kr + 3 n [Atomic and…

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.