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Studentka2010 [4]
3 years ago
15

Pls help this isn’t hard I’m just not sure about the answer this is also Science ATTENTION

Chemistry
1 answer:
fgiga [73]3 years ago
6 0
The answer is probably c i guess
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Iodine-131 is a radioactive material that plays a role in natural gas production and has a half-life of 8 days. A 320-mg sample
svetlana [45]

Time of decays approximately 2.853 days

<h3>Further explanation</h3>

Given

mass = 320mg iodine-131

No=320 mg

Nt=250 mg

t1/2 = 8 days

Required

t=time of decays

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 250=320.\dfrac{1}{2}^{t/8}\\\\log\dfrac{25}{30}=t/8.log~0.5\rightarrow t=2.853~days

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3 years ago
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3 years ago
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IrinaVladis [17]
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3 years ago
What are the regions of the spectrum with wavelengths that can pass through the atmosphere called?
motikmotik

Answer:

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Explanation:

Hope this helps. Have a great rest of your day :)

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Advocard [28]

Answer:

Explanation:

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8 0
4 years ago
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