A piece of wood from an ancient ruin was carbon dated and found to be approx. 23,000 years old...?

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A piece of wood from an ancient ruin was carbon dated and found to be approx. 23,000 years old...?

The wood now contains 8.5 grams of carbon-14. Calculate how many grams of carbon-14 this piece of wood contained when the tree died. Show your work. (The half-life of carbon-14 is 5730 years.)

2006-12-08 16:58:03 · 2 answers · asked by thuong4187 1 in Science & Mathematics ➔ Chemistry

2 answers

23000/5730 = 4 half lives
2^4 = 16
There would have been 16x more C14 than there is now. 16 x 8.5 = 136 grams.

2006-12-08 17:04:05 · answer #1 · answered by docrider28 4 · 0⤊ 0⤋

8.5*2(^(23000/5730)) = 137.3 g

2006-12-09 01:15:05 · answer #2 · answered by Pseudo Obscure 6 · 0⤊ 0⤋