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lions [1.4K]
3 years ago
6

Which of the following procedures is used when refining petroleum? Increase the temperature of the oil. Decrease the temperature

of the oil. Increase the pressure of the oil. Decrease the pressure of the oil.
Chemistry
2 answers:
Novosadov [1.4K]3 years ago
6 0
Increase the tempature
arsen [322]3 years ago
4 0
The temperature increases 
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A 5.5 × 10–3 M solution of fluoroacetic acid, CH2FCOOH, has a pH of 2.57. What is the acid-dissociation constant, K a, of this a
lianna [129]

The acid dissociation constant is 1.3 × 10^-3.

<h3>What is acid-dissociation constant?</h3>

The acid-dissociation constant is a constant that shows the extent of dissociation of an acid in solution. We have to set up the reaction equation as shown below;

Let the acid be HA;

                  HA       +      H2O ⇄      H3O^+      +      A^-

since the pH of the solution is 2.57 then;

[H3O^+] = Antilog(-pH) = Antilog(-2.57) = 2.7 × 10^-3

We can see that; [H3O^+]  = [A^-] so;

Ka = (2.7 × 10^-3)^2/(5.5 × 10^–3)

Ka = 1.3 × 10^-3

Learn more about acid-dissociation constant: brainly.com/question/9728159

6 0
2 years ago
PH scale is a measure which helps us to compare the strength of various acids and alkalis.
nevsk [136]

Solutions with pH less than 7 are acidic in nature.

Therefore, a substance of pH 6 will be a weak acid.

6 0
2 years ago
How does the radius of the central atom affect the boiling points of Group 16 halides?
Taya2010 [7]
I don’t really know but hope you figure it out
6 0
3 years ago
Pb(NO3)2 + NH4Cl = PbCl2 + NH4NO3<br> how do i balance this??
Elden [556K]

Answer:

We have NH 4 and that's called the ammonium ion it also stays together.

Explanation:

7 0
2 years ago
can someone help me more clearly understand the difference between heterogeneous and homogeneous? Give an example of each plz.
const2013 [10]
Heterogenous mixtures are unevenly mixed. Like oil and vinegar in vinaigrette if it is not emulsified well enough and they separate. Any case where two things are not evenly distributed within each other.

Homogenous mixtures are evenly mixed throughout. Like salt water or kool-aid (when it's mixed).

Hope this helps!
3 0
3 years ago
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