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kykrilka [37]
3 years ago
7

I WILL RATE BRAINLIEST! I JUST NEED HELP!

Chemistry
2 answers:
makkiz [27]3 years ago
6 0
If they're half life, wouldn't that mean every 5730 years I would double? So 12.5 x 2= 25, 25 x 2 = 50, and 50 x 2 = 100% carbon-14. It doubled 3x so the 5730 x 3 = amount of years the volcano erupted
ycow [4]3 years ago
5 0
It erupted 17,190 years ago.
It has a half life of 5,730 years. Therefore, when it has 50% remaining, it has lived for 5,730 years. When it has 25% remaining, it has lived for 11,460 (5730+5730). When it has 12.5% remaining (25/2), then it has lived 17,190 years (11,460 + 5730).
:D
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