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pshichka [43]
3 years ago
8

What is the concentration of the murexide soution with a transmittance of 28.65%. (molar absorptivity = 3847)

Chemistry
1 answer:
Ainat [17]3 years ago
6 0

Answer:

The concentration of the murexide solution is 0.0000745 M

Explanation:

From Beer-Lambert's law,

A = εlc

A = Absorbance = 28.65% = 0.2865

ε = molar absorptivity = 3847 M/cm

l = path length = 1cm

c = concentration in mol/L = ?

c = A/εl = 0.2865/(3847×1) = 0.0000745 mol/L

Hope this Helps!

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In the reaction:
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Calculate the molarity of a 17.5% (by mass) aqueous solution of nitric acid. Select one: a. 2.74 m b. 4.33 m c. 0.274 m d. 3.04
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Answer:

Option e.

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Molarity is the concentration that indicates moles of solute in 1 L of solution.

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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:

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