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Sedaia [141]
3 years ago
6

Name of the the following unsaturated Hydrocarbon​

Chemistry
1 answer:
djyliett [7]3 years ago
8 0

honestly, who knows. I just want to take a s.h.t.t right now.

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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

0.25 + 0.018 = 15200c

0.268 = 15200c

c = 0.268/15200

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5 0
2 years ago
What phenomenon in nature do scientists use to define the length of a meter? Why is this a better definition than “the length of
sergey [27]

Answer:

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The definition is better due to the uncertainty involved in the use of the length of a standard meter stick because the length of the meter stick could change due to atmospheric conditions from place to place

Explanation:

8 0
3 years ago
A sample of a substance containing only magnesium and chlorine was tested in the lab and was found to be composed of 74.5% chlor
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Use a ratio to find out that x/190.2 = 74.5/100 

hope this helps
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How many electrons are in the lowest occupied energy level in a Group 6A element?
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Answer:

2

Explanation:

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