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Elena L [17]
3 years ago
5

What principle chemistry​

Chemistry
1 answer:
NNADVOKAT [17]3 years ago
8 0
Is this a question ?
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Looking at the name of an acid, how do you know if it only contains two elements or if it contains more than two?
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Which of the following is the best reference for more information regarding compounding?
stiks02 [169]

Compounding Corner on RxNet is the best reference for more information regarding compounding

<u>Explanation:</u>

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3 years ago
Which quantity will increase if the temperature is raised?
Irina-Kira [14]
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3 years ago
Rutherfordium-261 has a half-life of 1.08 min. How long will it take for a sample of rutherfordium to lose one-third of its nucl
Ira Lisetskai [31]

Answer:

t=1.712min

Explanation:

Hello!

In this case, since the radioactive decay equation is:

\frac{A}{A_0}=2^{-\frac{t}{t_{1/2} }

Whereas A stands for the remaining amount of this sample and A0 the initial one. In such a way, since the sample of rutherfordium is reduced to one-third of its nuclei, the following relationship is used:

A=\frac{1}{3} A_0

And we plug it in to get:

\frac{\frac{1}{3} A_0}{A_0}=2^{-\frac{t}{t_{1/2}} } \\\\\frac{1}{3}=2^{-\frac{t}{t_{1/2}} }

Now, as we know its half-life, we can compute the elapsed time for such loss:

log(\frac{1}{3})=log(2^{-\frac{t}{t_{1/2}} })\\\\log(\frac{1}{3})=-\frac{t}{t_{1/2}} }*log(2)

t=-\frac{log(\frac{1}{3})t_{1/2}}{log(2)} \\\\t=1.71min

Best regards!

8 0
2 years ago
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