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uranmaximum [27]
3 years ago
13

What type of energy does a ball on top of a hill or a child on top of a slide have? gravitational energy, mechanical energy, rad

iant energy, stored mechanical energy
Chemistry
2 answers:
Andrew [12]3 years ago
7 0

Answer:

The correct answer will be option-gravitational energy.

Explanation:

The gravitational force is the attractive force which exists between two objects with mass. This attractive force directly influence the other object as it helps maintain the object in the universe.

When one of the objects out of two is earth, the force is termed as gravity or it is the force with which the earth attracts the object.

The gravity is directly proportional to mass due to which the earth will attract the object with stronger force. When the object will be present at the height the strongest force applied on the object will be the gravitational force.

Thus, gravitational energy is the correct answer.

KATRIN_1 [288]3 years ago
5 0
Gravitational Energy
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Decreases in melatonin result in decreased?
crimeas [40]

Answer:

Im going to say sleep

Explanation:

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3 years ago
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Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the equation:
weqwewe [10]

Answer:

D) [PCl5]=0.00765M,[PCl3]=0.117M,and [Cl2]=0.0.117M

Explanation:

Based on the reaction:

PCl₅(g) ⇄ PCl₃(g) + Cl₂(g)

And knowing:

Kc = [PCl₃] [Cl₂] / [PCl₅] = 1.80

When you add PCl₅ into a flask, this gas will react producing PCl₃ and Cl₂ until [PCl₃] [Cl₂] / [PCl₅] = 1.80

This could be written as:

[PCl₃] = X

[Cl₂] = X

[PCl₅] = 0.125M - X

<em>Where X represents the moles of PCl₅ that react, </em><em>reaction coordinate.</em>

Replacing in Kc expression:

[PCl₃] [Cl₂] / [PCl₅] = 1.80

[X [X] / [0.125 - X] = 1.80

X² = 0.225 - 1.80X

0 = -X² -1.80X + 0.225

Solving for X:

X = -1.9M → False solution, there is no negative concentrations

X = 0.11735M → Right solution.

Replacing, concentrations in equilibrium are:

[PCl₃] = X

[Cl₂] = X

[PCl₅] = 0.125M - X

[PCl₃] = 0.117M

[Cl₂] = 0.117M

[PCl₅] = 0.00765M

And right option is:

<h3>D) [PCl5]=0.00765M,[PCl3]=0.117M,and [Cl2]=0.0.117M</h3>
7 0
3 years ago
Animals store energy by making a polymer called glycogen. which best describes the structure of glycogen?
attashe74 [19]
A highly branched polymer of glucose 
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3 years ago
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Find the mass of 5.60 mol NaOH
olga_2 [115]
The mass is 224 grams of NaOH
7 0
3 years ago
The heating curve for a sample of pure ethanol shows the slope of the line for gaseous state is greater than the slope of the li
Agata [3.3K]

Answer:

a. The specific heat capacity of the gaseous ethanol is less than the specific heat capacity of liquid ethanol.

Explanation:

The heating curve is a curve that represents temperature (T) in the y-axis vs. added heat (Q) in the x-axis. The slope is T/Q = 1/C, where C is the heat capacity. Then, the higher the slope, the lower the heat capacity. For a constant mass, it can also represent the specific heat capacity (c).

Heats of vaporization and fusion cannot be calculated from these sections of the heating curve.

<em>Which statement below explains that?</em>

<em>a. The specific heat capacity of the gaseous ethanol is less than the specific heat capacity of liquid ethanol.</em> YES.

<em>b. The specific heat capacity of the gaseous ethanol is greater than the specific heat capacity of liquid ethanol.</em> NO.

<em>c. The heat of vaporization of ethanol is less than the heat of fusion of ethanol.</em> NO.

<em>d. The heat of vaporization of ethanol is greater than the heat of fusion of ethanol.</em> NO.

3 0
3 years ago
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