Multiple Choice
An archaeological sample contains 0.743 g of lead-206 and 2.145 g of uranium-238.Assume that all the lead now present in the rock came from the radioactive decay of the uranium and that no appreciable amounts of other radioactive nuclides are present in the sample.The decay rate constant for the uranium is 1.537 10-10/ year.Determine the half-life of the uranium.
A) 4.509 109 years
B) 1.065 10-10 years
C) depends on the age of the sample
D) depends on the organic content of the sample
E) two of these
Correct Answer:

Verified
Correct Answer:
Verified
Q28: Identify the missing particle in the
Q29: Which statement about fusion is incorrect?<br>A)Fusion requires
Q30: Which of the following processes decreases the
Q31: The half-life of a sample has been
Q32: As atomic mass increases,the proton/neutron ratio of
Q34: A sample of wood from an Egyptian
Q35: A certain radioactive sample contains 2.4
Q36: The Fe-56 nucleus is known to
Q37: How much energy is released when
Q38: When the U-235 nucleus is struck with