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Nezavi [6.7K]
3 years ago
14

Technician A says that water floats to the top of fuel in the tank. Technician B says that water is more likely to be drawn into

the system when the fuel level is low. Which technician is correct?
Chemistry
1 answer:
svet-max [94.6K]3 years ago
4 0

Answer:

Of course, technician B is the smarter one!    

                           

Explanation:

Water molecules attract each other, and the oil molecules also stick together. That causes oil and water to form two separate layers.

Because water molecules are denser than oil, they sink to the bottom, leaving oil sitting on top of the water.

Now, many fuel systems are designed in such a way that the suction pipe is located at the base of the tank. Given the above, it is very easy to see why water to a great degree of probability will be drawn into the system when the fuel level is low.

Cheers!

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Answer:

The answer is given below.

Explanation:

We will consider the acid as HA and will set up an ICE table with the equilibrium dissociation of α.

AT pH 2.4 the initial H+ concentration will be 3.98^10-3 M

                      HA →              H+         +      A-

Initial concentration:  0.1    →  3.98 ^10-3       +      0

equilibrium concentration:  0.1(1-α) →   3.98 * 10-3 + 0.1α              0.1α

pKa of chloroacetic acid is 2.9

-log(Ka) = 2.9

Ka = 1.26 * 10-3

From the equation, Ka = [H+] * [A-] / [HA]

1.26 * 10-3 = (3.98 * 10-3 + 0.1α )* 0.1α / 0.1(1-α)      

Since α<<1, we assume 1-α = 1

Solving the equation, we have: α = 0.094

Since this is the fraction of acid that has dissociated, we can say that % of base form = 100 * α= 9.4%

6 0
3 years ago
What is the unit of measurement for mass?
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The density of gold is 19.3 the density of iron pyrite is 5.0 if a nugget of iron pyrite and a nugget of gold each have a mass o
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