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Alekssandra [29.7K]
3 years ago
15

In 1865 a pond was surrounded by open fields today the same area is swampy and surrounded by a forest which process is responsib

le for this change?
Chemistry
2 answers:
Nookie1986 [14]3 years ago
3 0

Answer:

erosion

Explanation:

RUDIKE [14]3 years ago
3 0

Answer:

It is erosion

Explanation:

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A buffer is prepared by adding 300. 0 ml of 2. 0 mnaoh to 500. 0 ml of 2. 0 mch3cooh. what is the ph of this buffer? ka= 1. 8 10
Anton [14]

The Henderson-Hasselbalch equation can be used to determine the pH of the buffer from the pKa value. The pH of the buffer will be 4.75.

<h3>What is the Henderson-Hasselbalch equation?</h3>

Henderson-Hasselbalch equation is used to determine the value of pH of the buffer with the help of the acid disassociation constant.

Given,

Acid disassociation constant (ka) = 1. 8 10⁻⁵

Concentration of NaOH = 2.0 M

Concentration of CH₃COOH = 2.0 M

pKa value is calculated as,

pKa = -log Ka

pKa = - log (1. 8 x 10⁻⁵)

Substituting the value of pKa in the Henderson-Hasselbalch equation as

pH = - log (1. 8 x 10⁻⁵) + log [2.0] ÷ [2.0]

pH = - log (1. 8 x 10⁻⁵) + log [1]

= 4.745 + 0

= 4.75

Therefore, 4.75 is the pH of the buffer.

Learn more about the Henderson-Hasselbalch equation here:

brainly.com/question/27751586

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1 year ago
LOS AMOOOO 1 AL 40 COMENTÉN​
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Explanation:

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What is the tempature -34°C expressed in kelvins? ​
8090 [49]

Answer:

239.15 is the answer

Explanation:

7 0
3 years ago
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What is the volume in cubic centimeters of a tablet weighing 210 mg
Sav [38]

Answer:

1mg=0.001

210

210×0.001÷1

=0.21

3 0
3 years ago
Brodation<br>number of oxygen in F2O is.​
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