Answer:.
%(Nt/No) = 97.15
= 100(to the nearest tenth)
Step-by-step explanation:
Given;
Half life of plutonium t₀.₅= 24000years
Using the decay constant formula
λ =ln(2)/t₀.₅
Where,
λ = decay constant
λ = ln(2)/24000 = 2.89E-5
Using the decay formula.
Nt = Noexp(-λt)
where,
t = time of decay
No = initial mass
Nt = mass at time t
Nt/No = exp(-2.89 * 1000 E-5)
Nt/No = 0.9715
%(Nt/No) = 97.15
= 100(to the nearest tenth)
