If an element has a half life of 12 years, how many years must elapse until 87.5% of the original material has decayed? Group of answer choices 24 yrs 12 yrs 60 yrs 48 yrs 6 yrs

Q: A particular radioactive material was weighed exactly 1 year ago, showing a mass of 200 g. If the…

A: Given: Mo=200 gM=23.0 gt=1 year = 365 days

Q: The half-life of a particular element is 330 days. What is its decay constant?

A: The relationship between Half life t1/2 and decay constant λ is  t1/2=ln2λ=0.693λ where ln2 is…

Q: 1. The decay of radioactive substance is given by 7 N = Noe (1), where N is the number of atoms…

A:

Q: What is the decay constant of an element with a half-life of 2.73 x 105 years? 7.76 x 10-14 s 7.15 x…

A: Given that:The half life of an element ist1/2=2.73×105 years

Q: a) Natural potassium contains 40K , which has a half-life of 1.277×109 years. What mass of 40K in a…

A: a) The number of radioactive nuclei is,

Q: The half-life of radium-226 is 1600 years. Suppose we have a 55 mg sample. Find a function that…

A: Write the expression for the radioactive decay model for the function that models the mass m(t)…

Q: ults vary with the amount of the sample. The decay constant represents a percentage of the sample…

A: Decay constant, proportionality between the size of a population of radioactive atoms and the rate…

Q: The half life for the decay of carbon-14 is 5.73*10^3 years. Suppose the activity due to the…

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Q: A sample of radioactive nuclei has N0 nuclei at time t = 0. The half-life of the decay is T1/2. In…

A: Activity is, R=-∆N∆t

Q: What is the mass of 1ci of 227TH? If the half-life is 1.90 years. O m = 1.11x 10-2g O m = 1.21x…

A: T1/2 = 1620 years = 1620 x 3.15 x 107s λ = 0.693/ T1/2 = 0.693/(1620 x 3.15 x 107 s)

Q: if you started with a parent isotope with 100% of its atoms and its half-life is 10 years. What is…

A: Given. t/T = 2 N(t) = No(1/2)t/T

Q: archaeologist sometime in the future analyzes the iron used in an old building. The iron contains…

A: half life of Ni -63  t/2 = 92 years LET x half life passed (N0 /2)X =( N0 / 128 ) = (N0 /2)7  X = 7…

Q: The half life for the decay of carbon-14 is 5.73*10^3 years. Suppose the activity due to the…

A:

Q: 3. Decay of a radioactive material takes place according to the data given in Table 2. Find the…

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Q: 1) how many grams of material remain when you start with 16g and the half-life number is 3 ?

A: Half Life number = t/T = 3 ( where T = half life and t = time of observation ) Initial mass of…

Q: Part 2: Rubidium-Strontium dating A geologist finds an old rock and wants to determine its age using…

A: Approach to solving the question: The formula for the radioactive decay of strontium-87 (87Sr) from…

Q: The half-life of a particular element is 330 days. What is its decay constant?

A:

Q: A certain radioactive element has a half life of 3 hours.  How many hours would pass during 4…

A: Half life for a radioactive material is the time taken by the material to radiate to it's half…

Q: 1. The decay of radioactive substance is given by -t T N = Nᵒe (1), where N is the number of atoms…

A: You are using incorrect symbol for Tau (decay constant).

Q: A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This…

A:

Q: Radioactive substances follow a specific law of decay. Namely, if you have a sample of some…

A: The given problem is based on radioactive decay and half life.  The given equation is 128

Q: Carbon is one of the fundamental elements in everything that's alive on Earth. The three naturally…

A: Carbon has generally three isotopes found in nature. Isotopes are those which have the same proton…

Q: The half-life of a radioactive isotope is known to be exactly 1 h. a) What fraction of a sample…

A: Given in question - Half-life (T) = 1 hour Solution: Step1 - Here we will understand the concept…

Q: Element Z has a half-life of 45 minutes. Which of the following statements is true regarding 4…

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Q: The decay of radioactive substance is given by N = Noe (1), where N is the number of atoms present…

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Q: While having a socially distanced barbecue with her family, Brenda's dog digs up a dead cat. This…

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Q: Radon-220 has a half-life of 55.6 seconds. What are the odds that any particular Radon-220 atom will…

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Q: A particular radioactive material was weighed exactly 1 year ago, showing a mass of 200 g. If the…

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Q: An ancient club is found that contains 140 g of pure carbon and has an activity of 4 decays per…

A: Given Mass of carbon in ancient club = 140 gm Carbon activity = 4 decays /sec Living trees ratio of…

Q: Supposed that a radioactive substance has decayed until only of 1/8 of it remains. How many…

A: let initial number of Nucleons= N0 remaining number of Nucleons= N =N08

Q: C has a half life of 5,730 years. How many 6C atoms would you need in order to measure an average of…

A: Here given the half life of 14C is 5730 year. There is an average decay of 10 decay per sec. We have…

Q: A radioactive substance has a half life of 15 minutes. How much of a sample of this substancewill…

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Q: In a radioactive substance at t = 0, the number of atom is 8 x 104 . its half-life period is 3 yr.…

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Q: Half life of a radioactive isotope is 4x108 years. If there are 10³ radioactive nudei in a sample…

A: Given : Half life of the radioactive isotope, t1/2 = 4×108 years Current number of radioactive…

Q: nuclear/ radioactive decay may be best expressed as Group of answer choices N = No e-1/λλt No = N…

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Q: Consider a small pot with a copper base. The base has a thickness of 2.0 mm and a diameter of 15 cm.…

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Q: A sample of hypothetical element X decays by positron emission and has a half-life of 79 years.  How…

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Q: If 10% of a radioactive material decays in 5 days, then the amount of the original material left…

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Q: half-life of element

A: Given: Half life time of an element X is t12=500 years Initial mass of element is 8 g Find: Final…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.