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SSSSS [86.1K]
2 years ago
14

In the diagram, what is happening to the ENERGY during Segment C? Phase Change Diagram_Water Question 16 options: The kinetic en

ergy is increasing because the molecules are speeding up. The potential energy is decreasing as the molecules break apart from each other. The potential energy is increasing because the heat is being used to break the connections between the molecules. The kinetic energy is decreasing because the molecules are slowing down.
Chemistry
1 answer:
Leviafan [203]2 years ago
4 0

There was an increase in kinetic energy during the segment C and in other segments

Recall: That temperature is a measure of the average kinetic energy, so increasing temperature all cause increasing kinetic energy and vice versa.

However too, the heat energy which is added during the phase change is usually used to overcome forces in order to hold the molecules together.

<h3>What is kinetic energy?</h3>

Kinetic energy is the type of energy an object or a body posesss due to it motion

The body usually maintains it's kinetic energy unless the speed changes

<h3>What it potential energy?</h3>

Potential energy is a type of energy an object or a body had due to its relative position.

Learn more about kinetic and potential energy:

brainly.com/question/13584911f

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(10 points) A student gathers the following data for the freezing point depression of a pure solvent and solvent-solute solution
Alex17521 [72]

Answer:

548 g/mol

Explanation:

The freezing point depression of a solvent occurs when a nonvolatile solute is added to it. Because of the interactions between solute-solvent, it is more difficult to break the bonds, so the phase change will need more energy, and the freezing point will drop, which is called cryoscopy.

The drop in temperature can be calculated by:

ΔT = Kf*W*i

Where Kf is the cryoscopy constant of the solvent, W is the molality, and i is the van't Hoff factor, which indicates the fraction of the solute that dissolves.

The molality represents how much moles (n) of the solute is presented in each kg of the solvent (m2), thus

W = n/m2

The number of moles is the mass of the solute (m1) in g, divided by the molar mass (M1) of it:

W = m1/(M1*m2)

So, by the data:

0.2214 = 0.632/(M1*0.00521)

0.00115M1 = 0.632

M1 = 548 g/mol

6 0
3 years ago
Read 2 more answers
Which of the following statements about the relationship between science and technology is not true
Dafna11 [192]
Because they r the same

8 0
3 years ago
When Elsa freezes things, is it an example of an exothermic or<br> endothermic reaction? Explain.
Reika [66]

Answer:

endothermic reaction

Explanation:

When Elsa from Frozen freezes things, it is an example of an endothermic chemical reaction.

An endothermic involves a reaction in which heat is absorbed from the surrounding. Hence the surrounding becomes colder at the end of the the change.

So, Elsa draws heat from the environment and this causes the environment to be colder and things that are in contact with her.

4 0
3 years ago
A 500. mL sample of oxygen is collected over 20.0∘C water at 760. torr. If the vapor pressure of water at 20∘C is 23.8 torr, wha
fomenos

Answer : The vapor pressure of the dry oxygen gas is, 736.2 torr

Explanation : Given,

Volume of sample of oxygen = 500 mL

Vapor pressure of oxygen + water = 760 torr

Vapor pressure of water = 23.8 torr

Now we have to determine the vapor pressure of the dry oxygen gas.

Vapor pressure of the dry oxygen gas = Vapor pressure of (oxygen + water) - Vapor pressure of water

Vapor pressure of the dry oxygen gas = 760 torr - 23.8 torr

Vapor pressure of the dry oxygen gas = 736.2 torr

Thus, the vapor pressure of the dry oxygen gas is, 736.2 torr

6 0
3 years ago
Suppose now that you wanted to determine the density of a small crystal to confirm that it is boron. From the literature, you kn
Phantasy [73]

Answer:

the volume of  CHCI3 = 7.87 ml

the volume of  CHBr3 = 12.13 ml

Explanation:

From the given information:

We all know that 1 g/cm^3 = 1 g/ml

The density of boron = 2.34 g/ml

The Volume of the liquid mixture  = 20 ml

Recall that:

Density = mass/volume

Mass = Density × Volume

Mass = 2.34 g/ml × 20 ml

Mass = 46.8 g

Suppose the volume of  CHCI3 be Y and the Volume of CHBr3 be 20 - Y

Then :

Y (1.492) + 20-Y(2.890) = 46.8

1.492Y + 57.8 - 2.890Y = 46.8

- 1.398 Y = -11

Y = -11/ - 1.398

Y = 7.87 ml

Therefore, the volume of CHCI3  7.87 ml

the volume of  CHBr3 = 20 - Y

= 20 - 7.87

= 12.13 ml

3 0
3 years ago
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