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Carbon-14 is unstable and undergoes β- decay, with a half-life of 5730 years. (a) What does...

Carbon-14 is unstable and undergoes β- decay, with a half-life of 5730 years.

(a) What does it decay into?
(b) How much energy is released in the reaction?
(c) If a 1 g sample of carbon contains 0.1% carbon-14, what is the activity in units of curie (Ci), where 1 Ci
= 3.7 × 1010 decay/s?
(d) What is the activity after 20,000 years have passed?

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