Mathematics, 02.04.2022 01:50 ashleyd2473
Background Info: A radioactive isotope is an
element that has a nucleus that is so unstable, that
it causes the substance to decay into a different
element. The half-life of a radioactive isotope is how
long it will take for that substance's mass to
decrease by half. Explained differently, after 1 half-
life period of time, 50% of the substance is gone.
The exponential decay equation used to determine
how much of a substance that is left, y, is:
y = a(0.5)*
=
a is the starting mass
x is the number of half-lives that have passed.
(EX. If the half life is 3 days, then 6 days would be 2
half lives and 9 days would be 3 half-lives)
Question 7 (1 point)
lodine-131 is a very useful radioactive isotope
that is used to locate and treat cancerous tumors
in the body and has a half life of 8 days. If a
radiologist were to use 64 mg of this isotope, how
much of it would still be left after 32 days?
Answers: 3
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The total number of dental clinics total for the last 12 months was recorded
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Jim had 3,067.48 in his checking account he wrote a check to pay for two airplane tickets. his account now has 1,845.24.
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Background Info: A radioactive isotope is an
element that has a nucleus that is so unstable, that<...
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