A) How much mass is left in a piece of animal skin after 17,145 years when a newly made piece of leather about the same size contains approximately 5603g of C-14? The half-life of C-14 is 5,715 years. B)How many years old is a piece of fossilized charcoal if the fossil contains 13.289g of C-14 when a new piece of charcoal of similar size contains 6803.9g? The half-life of C-14 is 5,715 years.

Q: How many half-lives have passed if about 3% (rounded) of the original parent material is left?

A: How many half-lives have passed if about 3% (rounded) of the original parent material is left?

Q: A short-lived radioactive isotope has a half-life of T1/2 = 6.06 seconds. What is its decay constant…

A:

Q: Carbon-14 decays into Nitrogen-14 emitting β particles and has a half-life of 5,730 years. This is…

A: The Radioactive decay follows the first-order kinetics. In this, the rate of decay is proportional…

Q: Calculate the nuclear binding energy for iron-58, which has a nuclear mass of 57.933817u. Take the…

A: Here we have to find out nuclear binding energy of Iron-58.

Q: Why is carbon dating ineffective in finding the ages of dinosaur bones?

A:

Q: AOK decays to 40Ar with a half-life of 1.25 x 10° yr. Assume that rocks contain no 40Ar when they…

A: Given : half life of decay, t1/2 = 1.25 × 109 years K40A40r=13

Q: If a material has a half life of 92.5 days, how long will it take for 75% of the material to decay?…

A: Half life of the material=92.5days 75% of the material decay

Q: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C14C has decayed to…

A: Half life of a radioactive decay is defined as the time required for the decay rate in the…

Q: Material found with the body had a C-14 activity of about 0.215 Bq per gram of carbon, where the A0…

A: The half life is t1/2=5730 yrs

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 there were originally 400 grams of carbon-14 in an object, how many grams would remain after…

A:

Q: How many half-lives will completely deplete a radioisotope?

A: Half-life of a radioactive material is the time it takes for half of the radioactive atoms to decay.…

Q: The half-life of 60 Co is 5.27 years. The activity of an 60 Co sample is 3.70x10° Bq . You may want…

A: The disintegration constant is given by  λ =0.693T where, T is the half life.

Q: A particular isotope has a half-life of 1 minute. If you start with 1 gram of this isotope, how much…

A: In the given question, We have to determine the remaining quantity of the isotope after 10 minute.

Q: Calculate the nuclear binding energy for iron-58, which has a nuclear mass of 57.933817u. Take the…

A: Given data- iron-58 has atomic number z=26, so proton (p)=26 and neutron (n)=32 1 amu =1 u=1.66 x…

Q: Radium-226 is a common isotope on Earth, but it has a half-life of about 1600 years. Given that…

A: The decay chain of Uranium-238 gives Radium-226 which is stable isotope. The half-life of…

Q: What happens when an unstable nucleus undergoes radioactive decay?

A: Radioactive elements are elements with unstable nuclei. To become more stable, the nuclei undergo…

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

A:

Q: If carbon-14 underwent beta decay, what is the resulting nucleus?

A: Beta decay:  A element which undergoes beta decay then the neutron of the atom gets converted to…

Q: C-60 decays with a hlaf life of 5.27 years to prosuce Ni-60 , decay constant 0.131  How long does…

A:

Q: In 1946, Willard Libby first proposed the metnod of radiocar bon olating. The radioactive isotope…

A:

Q: 17: A sample of U-235 started with 120 grams.  If the half-life of U-235 has a half-life of…

A:

Q: A rock sample contains two radioactive elements A and B, with half lives of 8000 and 16000 years…

A:

Q: Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric…

A:

Q: The half-life of a particular radioactive isotope is 6.5 h. If there are initially 48 * 1019 atoms…

A: Given:  Half life of isotope, T = 6.5 hours  Initial number of atoms, No = 48 x 1019 atoms  Total…

Q: Skeletal remains had lost 79% of the C-14 they originally contained.  Determine the approximate age…

A: The expression for the amount left after time t is,

Q: Carbon 14 half life if 5700 years. A newly discovered fossilized organism is estimated to have…

A: Given that               The half life of C-14 is (t12 )= 5700year               The initial amount…

Q: The half life of C-14 is 5730 years.  What percentage of C-14 remains 4850 years after a living…

A:

Q: Determine the age of a certain rock sample: carbon -14 half life = 5730 years. An archeology dig…

A: Given that: t0.5=5730 yrs.A=1 CpmA0=16 Cpmλ=?t=?

Q: Samples of seeds and plant matter from king tuntankhamun'sbtomb have a C-14 decay rate of 9.07…

A:

Q: A wood artifact discovered in 1990 showed a 14C-activity equivalent to 43% of that found in the…

A: Given : Half life of C-14, t1/2 = 5730 years Let initial count of C-14 be N = 100 The count of C-14…

Q: , how old is a sample if two-thirds of it is now the daughter isotope? What type of decay is…

A: We know , N=N0e-λt Where, N= remaining part of the sample N0=Initial amount of the sample λ=decay…

Q: The isotope Carbon 14 decays by β emission and has a half-life of 5730 years. The carbon in living…

A: This question can easily be solved by applying the concept of radiocarbon dating .

Q: A fossilized bone is found to contain one-thousandth of the C-14 level found in living matter.…

A:

Q: C^14, a form of carbon that is used to find the age of fossils has a half life of 5730 years. how…

A: Given(s): Initial sample, N0=10 g. Half-life, t12=5730 yr Time, t=13,000 yr. Require: Amount of…

Q: If a sample contains 20g of an isotope that has a half life of 1000 years. How much will be left…

A: Given data:  Initial amount of sample (N0) = 20 g Half life (T1/2) = 1000 years Required: Remaining…

Q: The half-life, which is unique to any given isotope, is defined as:

A: We know  half life :-The time taken for half of the original population of radioactive atoms to…

Q: How much energy in joules is produced by single fusion reaction? .02862 times the mass of a single…

A: Given : How much energy in joules is produced by single fusion reaction?  Mass = 0.02862mp

Q: If 1.99 half-lives have occurred, what amount of radio-active material would be left if you began…

A:

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.