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s2008m [1.1K]
3 years ago
13

Am I correct?? Help please

Chemistry
2 answers:
anzhelika [568]3 years ago
8 0

Answer:

I would say you are correct.

Explanation:

Anuta_ua [19.1K]3 years ago
5 0

Answer:

I believe it'll be A (even though you chose it already).

Explanation:

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Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C 6H 5CO 2H) and 0.15M sodium benzoate (C
gtnhenbr [62]

Answer:

pH=3.97

Explanation:

Hello,

In this case, for the calculation of the pH of the given buffer we need to use the Henderson-Hasselbach equation:

pH=pKa+log(\frac{[base]}{[acid]} )

Whereas the pKa for benzoic acid is 4.19, the concentration of the base is 0.15 M (sodium benzoate) and the concentration of the acid is 0.25 M (benzoic acid), therefore, the pH turns out:

pH=4.19+log(\frac{0.15M}{0.25M} )\\\\pH=3.97

Regards.

4 0
3 years ago
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A __ is a continuous range of a single feature such as wavelength
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Hey there! 

The correct answer to your question is: Spectrum
 
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3 years ago
Energy leaves the sun as light from region called the?
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