An ancient building was known to have been built 3000 years ago. Approximately what proportion of Carbon-14 atoms are yet in the building's wooden framing compared to the number which were present at the time of its construction

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 4.00 billion years old by…

A:

Q: Part A 90 You are examining a sample of rock that contains 1.6x1010 230 Th atoms decay by alpha…

A:

Q: The radioactive isotope (95 Nb) has a half-life of 35 days. A sample containing this isotope has an…

A: Let the half -life of the isotope be denoted as t1/2 .The expression for the decay constant λ in…

Q: (a) The atomic mass of the hydrogen isotope H is 1.007825 amu (atomic mass unit) and the mass of the…

A: Note: As per bartleby's rule, only one question should be answered. Kindly resubmit the other…

Q: In a piece of rock from the Moon, the Rb content is assayed to be 1.89×1010 atoms per gram of…

A:

Q: (2) What is the mass defect of a He atom if the atomic mass is 4.002603 amu? Answer: ---- mass…

A: 2) The mass defect  Additional Information: The mass of the proton, mp is 1.007276 u.…

Q: Tritium has a half - life of 12.33 years. What fraction of the nuclei in a tritium sample will…

A: Formula to calculate the fraction of remaining sample after 5.00 yr. is,

Q: A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 0.92-kg…

A: The initial activity of the sample can be obtained as R0=0.92×103 g15.0 decays/min11g=1.38×104/min

Q: A nucleus of copper has an atomic mass of 64.93 u (with Z=29 and A=65).  Considering that the mass…

A: Total binding energy of the nucleus is 552.89 Mev

Q: What is the mass of 25.0 mCi of technetium-99m (Tc99m)Tc99m , which has a half-life of 6.00 h?

A:

Q: You have a 5.2 mol pure sample of an unknown material. After 1.2 h, you discover that 56% has…

A:

Q: Question 1. Tritium has a a tritium sample will remain (a) after 5.00 yr?

A: GivenHalf Life for Tritium, t1/2=12.33 years

Q: The radioactive isotope of lead ^209Pb decays according to the differential equation dN/dt=-kN.  The…

A: Remaining fraction = (100-78)/100  e^-(.693t/3.3) = .22 take ln both sides  - .693t/3.3 = ln (.22) =…

Q: Radioactive potassium-40 has a half-life of 4.2 x 1016 s. a) Calculate the decay constant of…

A:

Q: E c) For a radio-nuclide, a number No of atoms at time t = 0 decays as N(t) = No e¯‹, where A is the…

A: Part i:Part ii:Part iii:

Q: Archeologist extracted 179 gm of carbon from an animal bone from an archeological site. The carbon…

A:

Q: An unknown element X has the following isotopes: ⁶⁴X (49.00% abundant), ⁶⁶X (28.00% abundant), ⁶⁸X…

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.