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The half life for radioactive decay of ....

The half life for radioactive decay of `.^(14)C` is 5730 years. An archaeological artifact containing wood had only `80%` of the `.^(14)C` found in a living tree. Estimat the age of the sample.

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To estimate the age of the archaeological artifact containing wood with only 80% of the carbon-14 found in a living tree, we can follow these steps: ### Step 1: Understand the Given Data - Half-life of Carbon-14 (\(T_{1/2}\)) = 5730 years - Remaining Carbon-14 in the artifact = 80% of the original amount ### Step 2: Convert Percentage to Decimal - 80% can be expressed as a decimal: ...
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The half life for radioactive decay of .^(14)C is 5730 years. An archaeological artifact containing wood had only 80% of the .^(14)C found in a living tree. Estimate the age of the sample.

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Carbon -14 used to determine the age of organic material. The procedure is absed on the formation of C^(14) by neutron capture iin the upper atmosphere. ._(7)N^(14)+._(0)n^(1) rarr ._(6)C^(14)+._(1)H^(1) C^(14) is absorbed by living organisms during photosynthesis. The C^(14) content is constant in living organism. Once the plant or animal dies, the uptake of carbon dioxide by it ceases and the level of C^(14) in the dead being falls due to the decay, which C^(14) undergoes. ._(6)C^(14)rarr ._(7)N^(14)+beta^(c-) The half - life period of C^(14) is 5770 year. The decay constant (lambda) can be calculated by using the following formuls : lambda=(0.693)/(t_(1//2)) The comparison of the beta^(c-) activity of the dead matter with that of the carbon still in circulation enables measurement of the period of the isolation of the material from the living cycle. The method, however, ceases to be accurate over periods longer than 30000 years. The proportion of C^(14) to C^(12) in living matter is 1:10^(12) . A nuclear explosion has taken place leading to an increase in the concentration of C^(14) in nearby areas. C^(14) concentration is C_(1) in nearby areas and C_(2) in areas far away. If the age of the fossil is determined to be T_(1) and T_(2) at the places , respectively, then

XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-OUTSIDE DELHI (SET-I)
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  15. Define the following : (i) Order of reaction (ii) Activation energ...

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  16. The half life for radioactive decay of .^(14)C is 5730 years. An archa...

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  17. Assign reasons for the following (i) Sulphur vapour is paramagnetic...

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  18. Describe the favourable conditions for the manufacture of (i) ammonia ...

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  19. Giving a chemical equation for each, illustrate the following processe...

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  20. An organic compound A contains 69.77% carbon, 11.63% hydrogen and the ...

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