The half-life of Po-218 is 3.1 minutes. How many grams of Po-218 would be left after 9.3 minutes, if the initial amount was 100 g?

Q: If you accidentally spill phosphorus-32 onto your shoe, how long would it take before 99.9% of the…

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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: Predict a likely mode of decay for unstable nuclide. Sn-100

A: The type of radioactive decay a nuclide undergoes can be estimated by finding the ratio of neutron…

Q: What is the product of alpha emission from uranium-238? A) ²³⁴U B) ²³²Th C) ²³⁴Th D) ²³⁷Np…

A: In the alpha decay, the atomic number is decreased by two units and mass number is decreased by four…

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 the amount of a radioactive element decreases from 2.4 g to 0.30 g in 12 days, what is its…

A: Given: Initial amount of radioactive element, N∘=2.4gFinal amount of radioactive element, N =…

Q: If the half-life of 100.0 grams of a radioactive isotope is 8 years, how many grams will remain in…

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Q: A radioactive nuclide 60/27 Co has a half-life of 5.27 years. Calculate the mass of 60/27Co that…

A: Given the half-life period of radioactive nuclide 60/27 Co has a half-life of 5.27 years.  Mass of…

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

A: Half life, t1/2 = 32 hours t1/2=32 hoursk = 0.693t1/2=0.69332 hours=0.02166 hour-1

Q: What type of decay occurs with the transformation of Th-234 to Ra-230?

A: The type of decay occurs with the transformation of Th-234 to Ra-230 has to be given.

Q: After 5.0 × 105 years, how much of the sample of Krypton-81 would remain?

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Q: 4. The half-life of bismuth-212 is 1 hour. If 12g of bismuth are allowed to decay, what mass of…

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Q: Complete the following nuclear bombardment equation by filling in the nuclear symbol for the missing…

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Q: 9. Radon-222 has a half-life of 2.8 days. How many half-lives will pass after 28 days? O 19 10 15 05

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Q: What particle is needed to complete the following nuclear equation? 2383NP %3D -1e 239 4Pu 23990Th…

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Q: 2. How long will the 2.56 mg of Pu-236 decay to 0.200 mg?

A: Half-life: It is the time that is taken by an element or any substance to get decay up to half of…

Q: What is the balanced nuclear equation for the formation of Ac-228 by Beta emission? 228 Ac 89 228 Ra…

A: The beta decay results in increase of atomic number by one whereas the atomic mass remains…

Q: Potassium 40 has a half life of 1.3 billion years.  If no half lives had passed, what percentage of…

A: A numerical problem based on half life period, which is to be accomplished.

Q: 2. The half-life of radon-222 is 3.8 days. How much of a 100 gram sample is left after 15.2 days?

A: Given data contains, The half-life of radon-222 is 3.8 days. Mass of sample left after 15.2 days is…

Q: A 4.0 g sample of Ra-226 decays to 1.0 g. If the half-life of Ra-226 is 1620 years, how much time…

A: Given initial concentration of Ra-226 = [Ra-226]0 = 4.0 g  Final concentration = [Ra-226] = 1.0 g…

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

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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: For the nuclear reaction 239 94 ° Pu + U+ ?, 235 92 what is the missing particle? OHe He Submit

A: Balancing nuclear reactions :-  In case of nuclear reactions    sum of atomic numbers of Reactants =…

Q: 1. If gallium - 68 has a half-life of 68.3 minutes, how much of a 160.0 mg sample is left after 1…

A: One half life is that time in which half of the radioactive substance gets decayed.

Q: Half life iridium 192 is 106.51 days. How many days are required for 60 mg to decay to 7.5 mg

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Q: If the half-life of a radioactive isotope is 32 days, how many half-lives must pass before a 3.0…

A: Radioactive decay follows the first-order kinetics. The half-life of the first-order reaction does…

Q: 1. Radon-222 has a half-life of 3.8 days. How many half-lives will pass after 38 days? O15 19 5 10

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Q: Complete the following nuclear bombardment equation by filling in the nuclear symbol for the missing…

A: Uranium splits into two smaller nuclei, krypton-92 and barium-141.

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: Which one of each pair of nuclides would you expect to have thelonger half-life?a. Cs-149 or Cs-139…

A: The nuclides which have longer-half life has to be given, One can find the stability of the nuclide…

Q: Plutonium-236 is an alpha emitter with a half-life of 2.86 years. How long will it take for the 1.20…

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Q: 10.6 nai 10.7. The radioactive nuclide 6ºCo has a half-life of 5.27 years. Calculate the mass of…

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Q: 233ра 'Pa

A: Radioactive decay series: It is series of radiochemistry in which transformation of one radioactive…

Q: Californium-246 is formed by bombardment of uranium-238 atoms. If four neutrons are formed as…

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: The half-life of Zn-71 is 2.4 minutes. If one had 100.0g at the beginning, how many grams would be…

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Q: In the following equation, what particle or type of radiation decay is needed in order to balance…

A: The given reaction is: In α-decay, atomic no. of the parent nuclei changes by 2 and mass no.…

Q: If the half-life of a radioactive substance is 4 days how much material will remain after 16 days if…

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Q: 1. The radioactive nuclide Co has a half-life of 5.27 years. Calculate the mass of Co that remains…

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

Q: Fill in the missing particle in each nuclear equation. At + He 217 a. b. 24Pu Na d. se + 241 5Am +…

A: For this question we will use the concept of  mass no and atomic no. we know that,  i)the sum of…

Q: The half-life of Th-232 is 1.4 x 10^10 years. If there are 50.0 g of the sample left after 5.6 x…

A: Calculate number of half-life:

Q: In a 3 X 109 -year-old rock that originally contained some 238U , which has a half-life of 4.5 X 109…

A: Half-life is defined as the time in which the original numbers of nuclei are decayed to half. In the…

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

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Q: Technetium-99 which has a half life of 6 hours is a useful isotope in diagnostic tests. If a patient…

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Q: The radioactive isotope *Pa decays by beta emission. 234 If the mass of a sample of protactinium-234…

A: Initial mass of isotope M = 83.5 ug Final mass of isotope M' = 20.9 ug  Time of decay t = 13.5 hours…

Q: Technetium-99 which has a half life of 6 hours is a useful isotope in diagnostic tests. If a patient…

A:

Q: When will a 1.00 g sample of thorium–232 have a mass of 1.00 mg, knowing that the half – life of…

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Q: In a 3×109 -year-old rock that originally contained some 238U , which has a half-life of 4.5×109…

A: Since 238U has a half-life of 4.5 × 109 y, it is useful for dating only very old materials, showing,…

Q: The half-life of ZN-71 is 3.2 minutes. If one had 120.0g at the beginning, how many gram would be…

A: Half lives formula  used  2n=[A0]/At Where  n= Half lives

Q: Os-182 has a half-life of 21.5 hours. How many grams of a 10.0 gram sample would have decayed after…

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