Through a friend in the security department at the museum, Angelaobtains a sampl

Question

Through a friend in the security department at the museum, Angelaobtains a sample of a wooden tool handle thatcontains 384 gof carbon. The decay rate of the 14Cin the sample is 8.1 Bq. How long ago was the wood in the handlelast alive? y
Through a friend in the security department at the museum, Angelaobtains a sample of a wooden tool handle thatcontains 384 gof carbon. The decay rate of the 14Cin the sample is 8.1 Bq. How long ago was the wood in the handlelast alive?
Through a friend in the security department at the museum, Angelaobtains a sample of a wooden tool handle thatcontains 384 gof carbon. The decay rate of the 14Cin the sample is 8.1 Bq. How long ago was the wood in the handlelast alive? y

Explanation / Answer

    here we use the relation     R = N     where N = No e-t     R = Noe-t     6.022 x 1023 C atoms are there permole     45 g of C contain 3.75 moles of C atoms     so for 384 g carbon we get     No = (3.75) (6.022 x 1023)(384) / 45         = ....... atoms     = 0.693 / T1/2        = 5730 yr        = ....... s     solve for time t

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