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bearhunter [10]
3 years ago
12

Malia was able to make a paperclip float on the surface of water. What will most likely happen to the paperclip if a drop of dis

hwashing detergent is added near it?
Chemistry
2 answers:
Vikentia [17]3 years ago
6 0
Answer: <span>C) Soap is a surfactant that disrupts the intermolecular forces of water making the paperclip sink.</span>

Explanation:

1) This is the set of choices that comes with this question:
<span>A) Soap is a surfactant that increases the intermolecular forces of water allowing the paperclip to continue to float.</span>

<span>B) Soap makes the water less viscous making the paperclip sink.</span>

<span>C) Soap is a surfactant that disrupts the intermolecular forces of water making the paperclip sink.</span>

<span> D) Soap makes the water more viscous allowing the paperclip to continue to float. </span>

2) Justification:

The paperclip is denser that water, so it should sink into the water. Then, why is the paperclip floating?


The papeclip is floating due to the high surface tension of the water.

The surface tension is the force that tends to keep the molecules of a liquid together resisting the spread due to other forces (gravity for example). The surface tension is what makes that a drop of water over a table keeps round and like a hemisphere instead of spreading along all the surface of the table.

That very same force makes it possible that some insects can stand over water and is the responsible for the meniscus that you see in the thin tubes that contain water (e.g. in the test tubes in your chemistry lab).

By the way, that strong intermolecular forces that keep the molecules of water attracted to each other is due the hydrogen bonds.


The soap is a surfactant which reduces the surface tension of the water, this is it disrupts the intermolecular forces of water, and that is what the option C) tells.
Sophie [7]3 years ago
4 0

Answer:

Soap is a surfactant that disrupts the intermolecular forces of water making the paperclip sink.

Explanation:

Soap is a surfactant, so it will disrupt the surface and make the paperclip fall through.

edg 2020

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sertanlavr [38]

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6 0
3 years ago
Please review the attachment
astra-53 [7]

Answer: The correct answer is -297 kJ.

Explanation:

To solve this problem, we want to modify each of the equations given to get the equation at the bottom of the photo. To do this, we realize that we need SO2 on the right side of the equation (as a product). This lets us know that we must reverse the first equation. This gives us:

2SO3 —> O2 + 2SO2 (196 kJ)

Remember that we take the opposite of the enthalpy change (reverse the sign) when we reverse the equation.

Now, both equations have double the coefficients that we would like (for example, there is 2S in the second equation when we need only S). This means we should multiply each equation (and their enthalpy changes) by 1/2. This gives us:

SO3 —>1/2O2 + SO2 (98 kJ)

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-395 kJ + 98 kJ = -297 kJ

Hope this helps!

8 0
3 years ago
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zimovet [89]

Answer:

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Explanation:

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8 0
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