A sample of a material has 200 radioactive particles in it today. Your grandfather measured 400 radioactive particles in it 60 years ago. How many radioactive particles will the sample have 60 years from today? number of particles 60 years from today: radioactive particles How many radioactive particles will the sample have 120 years from today? number of particles 120 years from today: radioactive particles

Q: If you know a sample is 2715 years old, what percent of carbon 14 would you expect to find in the…

A: Given that:                     Given time for the sample = 2715 years To find:…

Q: Pls. refer to the given answer choices so that i will know if my solution is wrong

A: 100% undecayed  at time 0 .

Q: brain scan uses the

A: The recommended dosage is only 40mCi. Since we know that 260 mCi corresponds to only 40 mL

Q: The following equations are for nuclear reactions that are known to occur in the explosion of an…

A:

Q: Explain why “weapons-grade” Uranium would not likely contain very much Uranium-23

A: Interpretation -  To explain why “weapons-grade” Uranium would not likely contain very much…

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: What is the difference between Uranium - 235 and Uranium - 238? Which one is more desirable? What…

A: Uranium-235 is Unstable and it contains 92 protons and 143 neutrons. Therefore, the atomic mass of…

Q: Which of the following particles completes the radioactive decay reaction below? 226 Ra ? + 222 Rn…

A: Radio Active Decay

Q: In the radioactive decay of Uranium- 238 into Thorium-234, which of the following radioactive…

A: The radioactive decay is the process of conversion of one atomic nucleus into another by the…

Q: Iodine-125 is radioactive and has a half life of 60.25 days. How much of a 7.20 mg sample would be…

A: The solution is as follows :

Q: A sample of a material has 200 radioactive particles in it today. Your great-grandfather measured…

A: In this problem half life period is 90 years because the radioactive particle reduced to half from…

Q: Radioactive nuclide, 90Sr, has a half-life of 30 years. What percent of a sample of 90Sr will remain…

A: Half life = 30 years  Time given = 60 years

Q: What is the missing product in the following nuclear equation? 90Sr  +  4He  →  2H  +  1n  +  ?

A: In a nuclear reaction, the sum of atomic numbers of the elements and the sum of mass numbers of…

Q: 01: Two radioactive samples contain equal number of particles initially. Sample A disintegrate at…

A: A with 10 particles per second B with 1000 particles per second As decay constant k =0.693/half life…

Q: If the original amount of lead-210 in a sample is 51.4 mg, how much time is needed for the amount of…

A: Given, initial amount of lead-210 = 51.4 g            remaining amount of lead-210 = 21.0 g The…

Q: The radioactive nuclide has a shelf-life of 17.5 hours. What mass remains from 0.0100g sample after…

A: Shelf-life of 17.5 hours, Calculate the mass remains from 0.0100 g after 24 hours.

Q: What is Nuclear Waste? Give some examples?

A: Nuclear waste has to be defined.

Q: particle is emitted

A:

Q: nuclear decay

A:

Q: Thorium-232 decays by a 10-step series, ultimately yielding lead-208. How many a particles and how…

A:

Q: Gold-198 has a halflife of 2.7 days. How much of a 872.5 mg gold-198 sample will remain after 13.5…

A: Given:  Half-life (t1/2) of gold-198 = 2.7 days The initial amount of gold-198 = 872.5 mg

Q: A scientist puts 250 grams of radioactive radium having a half life of 1690 years into a concrete…

A:

Q: 11) What is the radioactive particle released in the following nuclear equation? 90 Sr 38 90Y + ? 39…

A: The decay process when neutron is converted into a proton then the mass number does not change but…

Q: A certain radioactive material is known to decay at a rate proportional to the amount present. If…

A: According to question,Given data,Initial amount of radioactive material = 50 mg,After time t = 2…

Q: Thorium-232 undergoes a 10-step radioactive decay series before it reaches nuclear stability,…

A: The radioactive decay in which the nucleus emits an alpha particle is termed as α decay. In this…

Q: Write or complete the following nuclear equations. c. 2* U +¿ n → Ba+? + 3n 141 Ba+? + 3 in С. 56

A:

Q: Thorium-232 decays by a 10-step series, ultimately yielding lead-208. How many x particles and how…

A: When a heavy nuclei is converted to lighter nuclei, some particles are emitted.These particles are…

Q: 3. Radioactive material is known to decay at a rate proportional to the amount present. Initially…

A:

Q: The initial amount of the radioactive material B in a rock is determined to be 19.08 mg. Only 0.0038…

A:

Q: Complete and balance the following nuclear equations by supplying the missing particle: ? + 4 2He ¡…

A: Let the missing particle be  =  ZAX     XZA+H11  → S1430i + H11 we know that,   totat mass no of…

Q: A sample of a material has 400 radioactive particles in it today. Your great-grandmother measured…

A: Number of Radioactive particle measured by grandmother 100 year ago from now = 800 particles Number…

Q: If additional atoms of U-235 are present ,what could these extra neutrons cause to happen?

A: Applying concept of nuclear fission.

Q: 145 g sample of radioactive has a half live of 6.4 days how many g of material is left are 2 half…

A: The time required to disintegrate the molecule to half of its initial concentration is called the…

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

A:

Q: Identify

A: This reaction decay is fast decay with comparison to radioactive decay in Nature.

Q: f 10.0mg of I-131 exists, how much will be left after 32 days?  (1/2 life of I-131 = 8 days)

A: Given : Initial mass of I-131 = 10.0 mg Half life = 8 days And time passed = 32 days.

Q: 9. Carbon-14 in the atmosphere are constantly being renewed by A. X-rays B. beta rays C. gamma rays…

A: Answer Option D. Cosmic rays

Q: Nuclear __________ powers the sun and hydrogen bombs.     fission     fusion

A: Nuclear fisson is the process in which split into small particle.

Q: Write a balanced equation for each of the following nuclear reactions: (a) mercury-180 decays into…

A:

Q: When radioactive substances decay, the amount remaining will form a geometric sequence when measured…

A: Radioactive decay follows first order kinetics. The expression for rate constant(k) for the…

Q: Some workers responding to the 1986 explosion at the Chernobyl nuclear plant absorbed 403 J of…

A:

Q: If there were 300 grams of carbon-14 originally present, how many years would it take for there to…

A: Interpretation -  To determine how many years would it take for there to be 90 grams of carbon-14…

Q: Answer the following questions about penetrating power and shielding abilit: (a) Put the following…

A: The proximity of an electron in an orbital to the nucleus is known as penetration effect. When an…

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 radioactive iodine sample has a half life of 6 days. If the original sample is 24 grams, how much…

A:

Q: List three of the more important reasons or trends explaining why some atoms are radioactive and…

A: 1. The unstable ratio of protons to neutrons In small atoms, the ratio of protons to neutrons is…

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.