Element X decays radioactively with a half life of 9 minutes. If there are 760 grams of Element X, how long, to the nearest tent
h of a minute, would it take the element to decay to 19 grams?
2 answers:
Answer:
Step-by-step explanation:
760·0.5^(t/9) = 19
0.5^(t/9) = 19/760
2^(-t/9) = 0.025
-t/9 = log₂(0.025)
t = -9log₂(0.025) = 47.9 minutes
Answer:
47.9 minutes
Step-by-step explanation:
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