Archaeologists used pieces of burned wood, or charcoal, found at the site to date prehistoric paintings and drawings on walls and ceilings of a cave in Lascaux, France. Determine the approximate age of a piece of burned wood, if it was found that 74% of the C-14 found in living trees of the same type had decayed. The half life of C-14 is 5730

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A: Given The half-life period for 14C = 5730 y = 1.8 x 1011 sec. Molar mass of 14C = 14 g/mol NA =…

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Q: mass of phosphorus-32,

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Q: A radioactive sample has a decay constant of 1.32 x 10-3 h-1. What is its half life?

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Q: What is the approximate age of the artifact?

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Q: How old is a rock if the mineral biotite from the rock has 25,000 40K atoms and 75, 000 40Ar atoms?…

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