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Iodine-131 is a radioactive isotope with a half-life of 8 days. how many grams of a 64 g sample of iodine-131 will remain at the end of 24 days? select one: a. 48 g b. 8 g c. 56 g d. 32 g
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Iodine-131 is a radioactive isotope with a half-life of 8 days. how many grams of a 64 g sample of iodine-131 will remain at the end of 24 days? select one:

a. 48 g
b. 8 g
c. 56 g
d. 32 g

User AutoBaker
by
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1 Answer

1 vote
T= 8 d
m₁=64 g
t=24 d

m₂-?

n=t/T
n=24/8=3

m₂=64/2ⁿ

m₂=64/2³=8 g

b. 8 g
User JHeth
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