Answer:
2020 days
Explanation:
The half life equation is:
A = A₀ (½)^(t / T)
where A is the final amount, A₀ is the initial amount, t is the amount of time, and T is the half life.
Here, A = 1.25 mg, A₀ = 2.50 mg, and T = 2020 days.
1.25 = 2.50 (½)^(t / 2020)
0.5 = ½^(t / 2020)
1 = t / 2020
t = 2020
It takes 2020 days.
The time required before a 2.50-mg sample of 146 61 pm is reduced to 1.25mg is 2020 days.
Half life is the time taken by a radioactive material for the radioactivity of to reduce by half its original value.
The half life equation is:
A = A₀ (½)^(t / T)
where A is the final amount, A₀ is the initial amount, t is the amount of time, and T is the half life.
Given is the value of A = 1.25 mg, A₀ = 2.50 mg, and T = 2020 days.
1.25 = 2.50 (½)^(t / 2020)
0.5 = ½^(t / 2020)
1 = t / 2020
t = 2020
Thus, time taken is 2020 days.
Learn more about half life.
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