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erik [133]
3 years ago
7

What is an example of radioactive decay

Chemistry
1 answer:
Orlov [11]3 years ago
3 0
Types of decay | Radioactive decay | Khan Academy▶ 17:02<span>https://www.khanacademy.org/.../radioactive-dec...</span>Khan Academy<span>Alpha, Beta, Gamma Decay and Positron Emission. ... Radioactive decay. Mass defect and binding energy ...</span>
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What is the concentration (in M) of a sample of the unknown dye with an absorbance of 0.25 at 542 nm?
Sladkaya [172]

Answer:

see explanation below

Explanation:

Question is incomplete, so in picture 1, you have a sample of this question with the missing data.

Now, in general terms, the absorbance of a substance can be calculated using the beer's law which is the following:

A = εlc

Where:

ε: molar absortivity

l: distance of the light in solution

c: concentration of solution

However, in this case, we have a plot line and a equation for this plot, so all we have to do is replace the given data into the equation and solve for x, which is the concentration.

the equation according to the plot is:

A = 15200c - 0.018

So solving for C for an absorbance of 0.25 is:

0.25 = 15200c - 0.018

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0.268 = 15200c

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