(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Carbon 14 has a half-life of 5730 years, what fraction will have decayed in 2300 years?

2. Relevant equations

Nf/No =e^-kt

3. The attempt at a solution

Nf/No =e^-1.21 x 10^-4 x 2300

=0.068585374

However if I use Nf =No(1/2)^2300/5730

I get 0.757125224

I appreciate that i'm looking for the fraction that has decayed but i'm unsure as to why this has produced 2 different answers, I thought either could be used for this problem.

Thanks

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# Homework Help: Half Life - Calculate Fraction Remaining

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