Question

Carbon-14 has a half-life of 5,730 years. In how many years will 120 grams of Carbon-14 decay to 15 grams?
11,460 years

17,190 years

22, 920 years

28,650 years

Answer 1

Half life means time after which only 50% left.
Hint: \(120\rightarrow60\rightarrow30\rightarrow15\)

Answer 2

so what do I do?

Answer 3

@mathmate

Answer 4

An example to explain the meaning of half-life.
If there is 16 grams of Carbon 14 today, how much will there be in 5730 years?

Answer 5

@TTP ?

Answer 6

option c?

Answer 7

@mathmate

Answer 8

An example to explain the meaning of half-life.
If there is 16 grams of Carbon 14 today, how much will there be in 5730 years?

Answer 9

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