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Akimi4 [234]
3 years ago
6

Potassium-40 (K-40) decays into argon-40 (Ar-40). After 1.25 billion years, 20 grams of K-40 would be reduced to 10 grams. How m

uch of the original K-40 would remain after 5 billion years?
A. 0 grams
B. 1.25 grams
C. 2.5 grams
D. 5 grams
English
2 answers:
PilotLPTM [1.2K]3 years ago
8 0

B. 1.25 grams :))))))))))))

Nonamiya [84]3 years ago
8 0

the answer is B. 1.25 grams

 

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