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QUESTION
Radioactive isoptope X has a half life of 4.6 Billion years. If at the beginning the amount of isotope X present was 10 grams, how long will it take
Radioactive isoptope X has a half life of 4.6 Billion years. If at the beginning the amount of isotope X present was 10 grams, how long will it take for isotope X to decai to .625 grams?
Select one:
a. 18.4 billion years
b. 23 billion years
c. 9.2 Billion years
d. 4.6 billion year
