The answer is 35 70 140 280 560. grams
(The half-life of carbon-14 is 5,730 years)
22920/5730 = 4 half lives You will need to work backwards
1-divide years by half life ( which should also be in years )
2- Then multiple amount of grams by two , 4 times because that is the half life
35 70 140 280 560. grams
Radiocarbon in atmospheric carbon dioxide molecules enters the biological carbon cycle, where it is taken from the air by green plants and then passed on to animals via the food chain. Radiocarbon decays slowly in living organisms, and the quantity lost is constantly restored as long as the creature breathes or consumes food. However, after the creature dies, it no longer absorbs carbon-14, causing the amount of radiocarbon in its tissues to progressively diminish. Carbon-14 has a half-life of 5,730 40 years, which means that half of the radioisotope existing at any particular time will disintegrate spontaneously during the next 5,730 years. Because carbon-14 decays at a steady rate, an estimate of when a creature died is possible.
learn more about radioactivity refer:
https://brainly.com/question/2320811
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