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Zanzabum
3 years ago
5

Convert the measurement 345.82 Kelvin to degrees Celsius.

Chemistry
2 answers:
8_murik_8 [283]3 years ago
6 0
72.67 degrees Celsius
rusak2 [61]3 years ago
6 0
72.67 degrees Celsius
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Name any ten trainings that provide the opportunity of foreign employment​
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4 0
2 years ago
Which of the following is NOT a characteristic of a strong acid?
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a and c

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4 0
3 years ago
A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isotope.
dexar [7]
The answer is 3.

<span>The relation between number of half-lives (n) and decimal amount remaining (x) can be expressed as:

</span>(1/2) ^{n} =x

We need to calculate n, but we need x to do that. To calculate what p<span>ercentage of a radioactive species would be found as daughter material, we must calculate what amount remained:
1.28 -</span> 1.12 = 0.16

If 1.28 is 100%, how much percent is 0.16:
1.28 : 100% = 0.16 : x
x = 12.5% 
Presented as decimal amount:
x = 0.125


Now, let's implement this in the equation: 

<span>(1/2) ^{n} =0.125
</span>
Because of the exponent, we will log both sides of the equation:
n * log(1/2) = log(0.125)
n = \frac{log(0.125)}{log(1/2)}
<span>n = \frac{log(0.125)}{log(0.5)}
</span>n= \frac{-0.903}{-0.301}
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Therefore, 3 half-lives have passed <span> since the sample originally formed.</span>
4 0
3 years ago
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A light-year is the distance that light travels in one year. Please select the best answer from the choices provided T F
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7 0
3 years ago
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These type of cells lack a nucleus -
nexus9112 [7]
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2 years ago
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