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kati45 [8]
3 years ago
6

Plutonium-241 is an isotope of plutonium that is highly radioactive and is used in some nuclear reactors and many nuclear weapon

s. It has a half-life of 14.4 years. If 1000g of Pu-241 is placed in storage at a weapons plant, how much will still be remaining after 28.8 years?
Physics
2 answers:
choli [55]3 years ago
7 0
We use the radioactive decay equation for this problem which is expressed as:

An = Aoe^-kt

An is the remaining amount after time t, Ao is the initial amount and k is a constant.

First, we determine the k from the half life as follows:

An/Ao = 1/2 = e^-k(14.4)
k = 0.04814

Then, we can calculate An after 28.8 yr.

An = 1000 e^-0.04814(28.8)
An = 250 g
Andrew [12]3 years ago
6 0

Answer:

250g

Explanation:

i just took the test

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<u>Complete Question:</u>

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