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A piece of wood from an archaeological s...

A piece of wood from an archaeological sample has 5.0 counts `mi n^-1` per gram of C-14, while a fresh sample of wood has a count of 15.0 `mi n^-1 gram^-1`. If half-life of C-14 is 5770 years, the age of the archaeological sample is

A

8,500 years

B

9,200 years

C

10,000 years

D

11,000 years

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A piece of wood from an archaeological source has a "^14C activity which ls 60% of the activity found in fresh wood today. Calculate the age of the archaeological sample (the half life period of C-14 is 5770 years).

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A sample of 16 g charcoal was brought into contact with CH_(4) gas contained in a vessel of 1 litre at 27^(@) C . The pressure of gas was found to fall from 760 to 608 torr. The density of chacoal sample is 1.6 g//m^(3) . What is the volume of the CH_(4) gas adsorbed per gram of the adsorbent at 608 torr and 27^(@)C ? 125 L//g , 16.25 mL//g , 26 mL//g , none of these .

The half-life for radioactive decay of .^14C is 5730 years. An archaeological artifact contented wood that has only 80% of the .^14C found in living tree. Estimate the age of the sample.

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MODERN PUBLICATION-CHEMICAL KINETICS-EXERCISE
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  2. The rate of a reaction is given by rate, r = k [H^+]^n If the rate bec...

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  3. A piece of wood from an archaeological sample has 5.0 counts mi n^-1 p...

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  4. For the reaction A + 2B rarr C, the reaction rate is doubled if the co...

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  10. The reaction takes place in two steps as: (i) NO2Cl(g) overset (k1)r...

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  11. The rate constant and half life of a first order reaction are related...

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  13. In the reaction A rarr Products, when the concentration of A was reduc...

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  18. For a first order reaction, (A) rarr Products, the concentration of A ...

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