Question

The half life of polonium is 140 days.
After how many days, 16g polonium will
be reduced to 1g (or 15 g will decay)​

Answer 1

Answer:

560 days

Explanation:

k=(2.303 x log2)/

k=(2.303 x log2)/140

We know that

t= (2.303 × log[A₀]/log[Aₜ])/k

t= (2.303×140×log16/1)/2.303×log2

t=(2.303×140×4log2)/2.303×log2 (∵ log(mⁿ)=nlog(m))

t=140×4=560 days

So I hope i answered your question.