the half life of C14 is approx: 5730 years, while the half life of C12 is essentially infinite. if the ratio of C14 to C12 in a certain sample is 25% less than the normal ratio in nature, how old is the sample?
a. less than 5730 years
b. approx: 5730 years
c. significanly greater than 5730 years but less than 11460 years
d. approx: 11460 years
e. approx: 15730
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Answer:
a
5730/4 : 0/4 =1432= less than 5730 Years
here we divide 5730 by 4 because 25% means quarter of the original value is decreasing
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