Answer:
t=6.2days
Step-by-step explanation:
Find a substance half-life in days. round your answer to the nearest tenths
k value=0.1124
N0=33 grams
since the questions says the time it takes for the substance to reduce to half of its size. the initial mass doesn't matter
N=N0e^-kt
N/N0=e^-kt
take laperian log of both sides
Ln(N/N0)=-kt
Ln(0.5)=-0.1124t
-0.693=-0.1124t
t=6.16
t=6.2days
Note: Half life is the time it takes for a radioactive material to reduce to half of its size/mass.
