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MrMuchimi
2 years ago
7

Strontium-90, a radioactive isotope with applications in medicine, has a half-life of approximately 30 years. Out of a 100-gram

sample, approximately how much remains after 170 years? 2 grams 8 grams 17 grams 81 grams
Chemistry
1 answer:
AveGali [126]2 years ago
5 0

There are 2 grams remain

<h3>Further explanation</h3>

Given

t1/2 = 30 years

t = 170 years

No = 100 g

Required

Remaining sample

Solution

General formulas used in decay:  

\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{t/t\frac{1}{2} }}}

Input the value :

\tt Nt=100.\dfrac{1}{2}^{170/30}\\\\Nt=1.969\approx 2~grams

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The volume of carbon gas at 5.0 ATM was measured to be 363 ml. What will the pressure be if the volume is change to .00020 ml?
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Answer:

The answer to your question is P2 = 9075000 atm

Explanation:

Data

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Pressure 2 = P2 = ?

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Process

To solve this problem use Boyle's law

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2 years ago
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