Suppose the amount of a certain radioactive substance in a sample decays from 6.50 mg to 2.40 mg over a period of 16.1 years. Calculate the half life of the substance. Round your answer to 2 significant digits.

Q: If the amount of a radioactive element decreases from 0.36 g to 90. mg in 22 min, what is its…

A: Half-life (t1/2) is defined as the time required by a substance to reduce to half of its initial…

Q: Skeletal remains had lost 85%of the C-14 they originally contained. Determine the approximate age…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 4.60 mg to 1.90 mg…

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Q: 7) The half life of silicon is 710 years. 40 grams are present now, how much will be present in 200…

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Q: Beginning with 1.00 g of a sample of an unknown radioactive isotope, 0.05674 g of the isotope will…

A: The answer to the following question is-

Q: If the mass of a sample of radioactive cesium-137 decays from 71.9 milligrams to 20.8 milligrams in…

A: The integrated rate law expression for the first-order kinetics is: Half-life relates to the rate…

Q: [Refere A 1.14 g sample of a radioactive isotope decays to 0.87 g in 36.3 hr. What is the half-life…

A: Given  Initial Amount [ A ]0   = 1.15 gram  Remaining Amount [ A ]    = 0.87 gram  Time ( t ) = 36.3…

Q: Moonrock collected by a US Apollo mission is estimated to be 4.30 billion years old by uranium/ lead…

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Q: If uranium-238 has a half-life of 45 billion years, how many years would it take for a 10-gram…

A: Given  Half life of U-238 (t1/2)   = 45 billion years 1 billion years    = 109 years  45 billion…

Q: Radioactive Decay The half-life of palladium-100 is 4 days. After 20 days a sample has been reduced…

A: Given Data:  Half life of Pd-100 = 4 days  Reduced mass = 0.375g The formula of half life is given…

Q: Uranium-240 has a half-life of 14.1 hours (note this is NOT a fissionable isotope).  A country with…

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Q: A radioactive isotope has a half life of 17.4 minutes. How long will it take for the radiation from…

A: Half life is a time taken to half the concentration of the substance present. here , the radioactive…

Q: The half life for the decay of carbon-14 is 5.73 × 10° years. Suppose the activity due to the…

A: Given: Half-life of carbon-14 decay = 5730 years. Activity of carbon-14 in the sample = 51 Bq. And…

Q: The answer should be 26.7 days

A: Half-life:The time taken for half disintegration of radioactive element from its original amount is…

Q: After 60 days, 10 grams of radioactive isotope remains from an original 27 g sample. What is the…

A: Given,

Q: The initial amount of the radioactive material V in a rock is determined to be 6.78 mg. Only 1.46 mg…

A: final answer is = 5.3200 mg

Q: The half life for the decay of carbon-14 is 5.73 x 10° years. Suppose the activity due to the…

A: Here by applying first order disintegration equation ,we can determine the age of artifacts.

Q: Enter your answer in the provided box. Strontium–90 is one of the products of the fission of…

A: Given-> Half life = 28.1 year Initial amount = 4.00 gm Final amount = 0.100 gm

Q: If the half life of a radioactive element is 32.8 years, how many years will it take for a sample to…

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Q: 2) If 20.0 g of a radioactive isotope are present at 1:00 PM and 5.0 g remain at 2:00 PM, what is…

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

Q: At the beginning of an experiment, a scientist has 228 grams of radioactive goo. After 135 minutes,…

A: Hi! there, since there are multiple questions posted. We are answering first question. If you need…

Q: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to…

A: Given,                 Isotope = 14C                 Half life =5730 years                 Remaining…

Q: (Simplify your answers. Do not round until the final answers. Then round to four decimal places as…

A: All radioactive decays are first order reaction. The half-life of first order reaction is given by,…

Q: 7. If uranium-238 has a half-life of 45 billion years, how many years would it take for a 10-gram…

A: The half-life is the time required to reduce one half of the initial concentration of the substance.

Q: At the beginning of an experiment, a scientist has 244 grams of radioactive goo. After 105 minutes,…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 6.70 mg to 700. µg…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 9.40mg to 5.40mg over…

A: Radioactive decay is the first order decay. the formula for calculation of radioactive decay as…

Q: A 40.0 mg sample of a radioactive substance decays to 10.0 mg in 10 days. What is the half-life of…

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Q: Suppose the amount of a certain radioactive substance in a sample decays from 1.60 mg to 900. µg…

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Q: The half life for the decay of carbon- 14 is ×5.73103 years.   Suppose the activity due to the…

A: The radioactive disintegration is the example of first order kinetics. The integrated rate equation…

Q: 3. A certain radioactive material is known to decay at a rate proportional to the amount present. If…

A: Solution -

Q: The number of a certain radioactive nuclide present in a sample decays from 59,122 to 429 in 9.23…

A: Given: No=59122Nt=429t=9.23 days Half life of the radioactive species refers to the time required to…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 7.10 mg to 5.20 mg…

A: Radioactive decays are first order reactions. Since we know that the relationship between the amount…

Q: radioactive sample originally contains 8.0g of an isotope with a half- life of 6 days. What is the…

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Q: At the beginning of an experiment, a scientist has 192 grams of radioactive goo. After 90 minutes,…

A: Initial mass, final mass, time required for radioactive goo are given for which relevant questions…

Q: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to…

A: For each half life, the specimen decays half the amount of initial amount.

Q: Suppose the amount of a certain radioactive substance in a sample decays from 7.40 mg to 4.60 mg…

A:

Q: The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain…

A: We are given Radium -226 t1/2=1590 years                  (i) We know radioactive decay always…

Q: percentage of his original carbon-14

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Q: The half life for the decay of carbon-14 is 5.73 x 10³ years. Suppose the activity due to the…

A: Given: The half-life of carbon-14 = 5.73 × 103 years The activity of the sample = 81 Bq The activity…

Q: The initial amount of the radioactive material V in a rock is determined t be 6.78 mg. Only 1.46 mg…

A: When we study the kinetics of any chemical reaction that means how slow or fast reaction is, then…

Q: Be sure to answer all parts. The activity of radioactive carbon-14 decay in a piece of charcoal…

A: Radioactive decay follows first order kinetics.  We know that : k = 0.693/t0.5 ...(1)  Here, t0.5 =…

Q: 5. A tree falls in a forest. How many years must pass before the carbon-14 mass in the tree's carbon…

A: Suppose Initial amount = Ao Amount at time, t = 3.125% Ao  Half-life, t1/2 = 5570 years

Q: 0 Question 9 180pb has a half-life of 25.5 s. If a sample of this isotope is initially 750.0 g, what…

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Q: 3. Suppose a sample of carbon-243 has a half-life of 3427 years. How long does it take for 80% of a…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: 4. The half-life of radioactive radium-224 is 3.50 days. What was the original mass if 0.200 g…

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Q: 12. A year ago there were 4 grams of a radioactive substance. Now there are 3 grams. How much was…

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Q: The half life for the decay of carbon-14 is 5.73 × 10° years. Suppose the activity due to the…

A: Given: The half-life for the decay of carbon= 5.73×103 years The activity of fresh wood sample= 99…

Q: A certain radioisotope has a half-life of 9.54 days. What percentage of an initial sample of this…

A:

Q: The half life for the decay of carbon-14 is 5.73 x 10° years. Suppose the activity due to the…

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.