Mlopez14
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Background knowledge: Carbon-14 can determine the age of materials between 5,800 and 62,000 years old. The half-life of C-14 is 5,730 years.

I have to find the count rate for 1g of carbon in a site where Neanderthals have existed in Europe about 40,000 years ago, given that the count-rate for 1 g of carbon in equilibrium with the atmosphere is 15.0 / min.
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Pigster
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(Original post by Mlopez14)
Background knowledge: Carbon-14 can determine the age of materials between 5,800 and 62,000 years old. The half-life of C-14 is 5,730 years.

I have to find the count rate for 1g of carbon in a site where Neanderthals have existed in Europe about 40,000 years ago, given that the count-rate for 1 g of carbon in equilibrium with the atmosphere is 15.0 / min.
Fascinating.
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Mlopez14
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(Original post by Pigster)
Fascinating.
It is.
Now can you help me or not?
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charco
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(Original post by Mlopez14)
Background knowledge: Carbon-14 can determine the age of materials between 5,800 and 62,000 years old. The half-life of C-14 is 5,730 years.

I have to find the count rate for 1g of carbon in a site where Neanderthals have existed in Europe about 40,000 years ago, given that the count-rate for 1 g of carbon in equilibrium with the atmosphere is 15.0 / min.
Where have you looked for it?
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BDavies1
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(Original post by Mlopez14)
Background knowledge: Carbon-14 can determine the age of materials between 5,800 and 62,000 years old. The half-life of C-14 is 5,730 years.

I have to find the count rate for 1g of carbon in a site where Neanderthals have existed in Europe about 40,000 years ago, given that the count-rate for 1 g of carbon in equilibrium with the atmosphere is 15.0 / min.
14-C is taken into plants by photosynthesis, ends up in biomass (animals eat plants etc). Animal dies and the amount of 14 C slowly decreases over 100's of years due to 14 C undergoing beta decay into14N. The older the material is, the less 14 C there is.....how may half lives in the 40000 years since the Neandertal died?...
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Mlopez14
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(Original post by charco)
Where have you looked for it?
It's in the question
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