44. Cobalt-60 has a half decay, how many grams

Q: The half-life of 26?? 59 is 44.6 days. How long will it take for 95.0% of a sample of this nuclide…

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Q: If the initial sample is  1.25 g,  what mass of the original iridium‑192 remains after  65  days?…

A: According to the question we have, Initial mass (original mass) of the sample= Mo = 1.25 g Time (t)…

Q: Consider a radioactive sample with a half-life of one week. How much of the original sample will be…

A: Half-life period is defined as the time taken for amount of the sample to reduce to half of its…

Q: Zinc-71 decays to a gallium-71 nuclide with a half-life of 2.45 minutes. What percent of a zinc-71…

A: We have to find out the percentage of zinc for the given question

Q: 94 Kr are produced The nuclear fission of U-235 can occur by different pathways. If 2 neutrons and…

A: The nuclear fission of 235Ur is given by

Q: Bombardment of a nuclide with an alpha particle produces a neutron and a new nucleus of P– 30…

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Q: A rock from Australia contains 0.438 g of Pb-206 to every 1.00 g of U-238. Assuming that the rock…

A: The half life for uranium is 4.5×109  years. The rate constant for the first order reaction is:…

Q: What is the other product (besides an alpha particle) when 14 Gd undergoes alpha decay?

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Q: Cobalt-60 has a half-life of 5.3 years. How many half-livesoccur after 21.2 years?

A: Generally, a radioactive decay reaction takes place as a first order reaction.  In a first order…

Q: 82 joes ß decay. Wh

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Q: Compare and contrast beta-positive and beta-negative decay. Be sure to include changes to the parent…

A: Introduction: Beta decay is a type of radioactive decay in which proton is transferred into neutron…

Q: Use the References to access important values if needed for this question. Fill in the nuclide…

A: A question based on nuclear equation, which is to be accomplished.

Q: Iodine-131 has a half-life of 8 days. What fraction of the original sample would remain at the end…

A: Half life is the period at which concentration of reactant reduces half of its original value.

Q: What are the three types of beta decay?

A: The types of beta decay has to be given.

Q: Look at the figure below. In the mineral specimen represented here, radioactive parent atoms (red)…

A: HALF- LIFE PERIOD: In radioactivity, half- life period is defined as the time period required for a…

Q: A radioactive isotope has a half-life of 12.0 seconds. How much of a 100 gram sample is left after…

A: Given  Initial Mass of Sample ( A)0  = 100 gram  Half life time ( t1/2)   = 12 sec  Time ( t ) = 36…

Q: A Write the complete decay equation for the given nuclide in the complete "XN notation.

A: Alpha decay is a type of radioactive decay where an atomic nucleus decays by emitting an alpha…

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 6.00 gg of 32P32P, how many grams will…

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Q: A radioactive substance has a ​half-life of 437 years. What is its decay​ rate?

A: Radioactive Decay: Radioactive decay is the property of the several naturally occurring elements as…

Q: Radium-221 has a half life of 30 seconds. How long will it take for 82% of a sample to decay?

A: Half life =30 seconds Decay percentage = 80%

Q: An unknown radioactive element decays into non-radioactive substances.  In 660 days the…

A: Rate constant (k)= 2.303/t log 100/49 So k = (2.303/660) ×0.3098 =0.0011 days ^-1

Q: Complete the indicated decay: a. Alpha decay: ?C → yields 12 yields b. Beta decay: Те -> 1287 52…

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Q: An 80 g sample of radioisotope decayed to 10 g after 24 days. What was the total number of grams of…

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

A: The emission of energy in the form of the ionizing radiation is called radio decay.This radiation…

Q: The half–life of a radioactive material is 7.04 days. Assuming you start with a 1.45 mg sample, how…

A: Given , Half life = 7.04 days Time , t = 16 days Initial Weight of sample = 1.45 mg

Q: The radioisotope potassium-40 decays to argon-40 by positron emission with a half-life of 1.3 × 109…

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Q: The nuclide 35S decays by beta emission with a half-life of 87.1 days.(a) How many grams of 35S are…

A: The relation between the half life nad the number of nuclei,N=A(t120.6931)........1stWhere,N  =…

Q: 187 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

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Q: Decay of carbon-14 by b emisson creates which element

A: Beta-decay is radioactive decay where a fast electron is emitted.

Q: Nuclides with too many neutrons to be in the band of stability are most likely to decay by what…

A: Nuclides with too many neutrons lie above in the band of stability. This nuclie which has more…

Q: The actinium decay series begins with uranium-235 and ends with lead-207. The first 5 steps involve…

A: The actinium decay series begins with uranium-235 and ends with lead-207. The first 5 steps involve…

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: sodium-22 is formed from the alpha decay of what substance

A: The given element is sodium-22.

Q: Cobalt-60 is commonly used as a source of beta-particles. How long does it take for 87.5% of a…

A: Radioactive decay is associated with the emission of small energetic particles e.g. beta particles,…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.3 g remain. What is the original…

A: Answer

Q: 28Mg lies above the band of stability- its most likely mode of decay is what?

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Q: A radioactive sample contains 2.45g. How much willl remain after 11.4 days? (Half life is 3.8 days)

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Q: The nuclide 180 ( atomic mass, 17.99916 u) is produced by the B* decay of 18F (atomic mass, 18.00094…

A: Beta+ decay is positron decay  189F -------> 188O + 0+1e + Energy Atomic mass of oxygen =…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.8 g remain. What is the original…

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Q: A rock contains a Pb-206 to U-238 mass ratio of 0.473:1.00. Assuming the rock did not contain any…

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Q: 47. (a) Write the complete B decay equation for 90Sr, a major waste product of nuclear reactors. (b)…

A: 3890Sr →  3990Y +  -1 0β + υe   This will be the equation for this beta minus decay

Q: 5.00 hours of decay, 3.4g of the substance remain. What is the

A: Initial mass of substance is 17.8g Mass of substance after left is 3.4g Decay time 5 hours

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

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Q: ng: The nuclide polonium-218 undergoes beta decay to form astatine-21s.

A: In beta decay, atomic number increases by 1 and the mass number remains the same.

Q: Polonium 209 (Po-209) has a half life of 103 years. How long would it take a 100-g sample to decay…

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Q: what is the connection between radioactivity and chart of nuclide?

A: Radioactivity is the act of emitting radiation spontaneously. This is done by an atomic nucleus…

Q: 65 Predict the mode of decay Ni undergoes. Positron Alpha Beta It is stable and does not undergo…

A: Given that  Decay of 65Ni

Q: an atom bomb releases 39.2x10^13 j of energy. how much mass (in grams) was converted to energy to…

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.