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Concept explainers
Interpretation:
The approximate half life of carbon -14 needs to be calculated by using the given graph.
Concept introduction:
Half Life (t1/2) of Carbon is defined as the time required reducing the half of the initial value of the sample.
The Half - life formula is as follows:
Where, N(t) = quantity of the substance remaining
N0 = initial quantity of the substance
t = time lapsed
t1/2 = Half life of the substance
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Answer to Problem 12STP
Correct Option: (B) 5730 years.
Explanation of Solution
The mass of carbon-14 in sample is given by following relation:
At half-life time, the mass becomes half of the initial value that is 50.
Thus,
Also,
Or,
Thus, half life of carbon-14 = 5730 years
Chapter U1 Solutions
Living by Chemistry
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