markpetefish markpetefish
  • 29-04-2024
  • Mathematics
Answered

An unknown radioactive element decays into non-radioactive substances. In
800
days the radioactivity of a sample decreases by
35
percent.

(a) What is the half-life of the element?
half-life: (days)

(b) How long will it take for a sample of
100
mg to decay to
63
mg?
time needed: (days)



Answer :

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