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DochEvi [55]
2 years ago
6

If brainly deletes one more of my answers when im just answering the question correctly im suing bro

Chemistry
1 answer:
ioda2 years ago
3 0

Answer:

The moderators are just there to delete relevant questions or answers but they aren't deleting the spammers .

Explanation:

Stay safe, stay healthy and blessed.

Have a good day !

Thank you

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m=m_{0}*(\frac{1}{2})^{2}\\\\
m=\frac{1}{4}m_{0}

If the half-life of a sample of a radioactive substance is 30 seconds, how much would be left after 60 seconds? <span>A. one-fourth</span>
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Suppose you find a rock that contains some potassium-40 (half-life of 1.3 billion years). you measure the amount and determine t
Alborosie
Equation for Half life :
A = a(0.5)^(t/h)
A is current amount, "a" is initial amount, h is halflife, t is time

5 = 40(0.5)^(t/1.3x10^9)
5/40 = (0.5)^(t/1.3x10^9)
take the log of both sides , power rule
Log(5/40) = (t/1.3x10^9) * Log(0.5)
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And if you think about what a half life is, the time it take for the amount to reduce to half.
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It went through 3 half-lifes
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7 0
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