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yanalaym [24]
3 years ago
11

23 When the pH of a buffer is equal to its pKa, what is the amount of dissociation that has occurred?

Chemistry
1 answer:
Gemiola [76]3 years ago
3 0
The correct answer is 50%.
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what is the volume of a book that has a width of 10cm,a length that is 2 times the width,and a height that is half the width​
Masteriza [31]

width=10cm

length=2xwidth=2x10=20cm

height=width/2=10/2=5

V=w*l*h=10*20*5=1000cm^3

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3 years ago
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Balance the equation<br> N2O5 + H2 -&gt; NH3 + H2O
Lubov Fominskaja [6]

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3 years ago
What factors do you think should be considered in selecting a metal to use to reclaim copper? Which factor do you think is the m
Lana71 [14]

Answer:

Aluminum

Explanation:

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7 0
3 years ago
For the following electrochemical reaction: Al3+(aq) + 3e -&gt; Al(s) Eº = -1.66 V E° = 2.87 F2(g) + 2e -&gt; 2F (aq) Calculate
makvit [3.9K]

<u>Answer:</u> The standard electrode potential of the cell is 4.53 V.

<u>Explanation:</u>

We are given:

E^o_{(F_2/F^-)}=2.87V\\E^o_{(Al^{3+}/Al)}=-1.66V

The substance having highest positive E^o potential will always get reduced and will undergo reduction reaction. Here, fluorine will undergo reduction reaction will get reduced.

Aluminium will undergo oxidation reaction and will get oxidized.

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

To calculate the E^o_{cell} of the reaction, we use the equation:

E^o_{cell}=E^o_{cathode}-E^o_{anode}

E^o_{cell}=2.87-(-1.66)=4.53V

Hence, the standard electrode potential of the cell is 4.53 V.

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3 years ago
Select which of the following are used to determine the age of the Earth. Select 3.
saveliy_v [14]

Meteorites discovered on earth

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3 years ago
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