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zhannawk [14.2K]
2 years ago
15

The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance gain energy during a change of state

. Before the change, the atoms are close together and cannot slide past one another. After the change, the substance can fill its container.
Which arrow represents the change of state described above?

L
M
N
O

Chemistry
2 answers:
Vinvika [58]2 years ago
6 0

Answer is: L.

The process by which a solid changes directly to a gas without first becoming a liquid is called sublimation.

Sublimation is an endothermic process.

For example dry ice (carbon(IV) oxide in solid state) is used because of sublimation in nightclubs, fog machines, at theaters, haunted house attractions .

1) Gas: does not have a definite shape or volume and changes to liquid on cooling.

2) Liquid: has definite volume but not shape and changes to solid on cooling.

3) Solid: has definite shape and volume and changes to liquid on heating.


alexandr402 [8]2 years ago
3 0
The correct answer is L, solid to gas; given that you meant after the change the substance can fill the container entirely
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ΔU for a van der Waals gas increases by 475 J in an expansion process, and the magnitude of w is 93.0 J.
timofeeve [1]

Complete question:

ΔU for a van der Waals gas increases by 475 J in an expansion process, and the magnitude of w is 93.0 J. calculate the magnitude of q for the process.

Answer:

The magnitude of q for the process 568 J.

Explanation:

Given;

change in internal energy of the gas, ΔU = 475 J

work done by the gas, w = 93 J

heat added to the system, = q

During gas expansion process, heat is added to the gas.

Apply the first law of thermodynamic to determine the magnitude of heat added to the gas.

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