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Paraphin [41]
3 years ago
6

Identify the change of state occurring in each situation. your friend's perfume producing an aroma that fills the room making ic

e cream from milk in an ice cream maker formation of frost on a cold windshield overnight wax dripping from a candle naphthalene solid (found in moth balls) producing fumes in the closet to deter moths your breath fogging up on your car windshield on a cold winter day
Chemistry
1 answer:
Darina [25.2K]3 years ago
4 0

Answer:

The solution to this question can be defined as follows:

Explanation:

  • W_{ax} Naphthalene falls off from candle something, strong fumes-sublimation produces.
  • On a rainy day in winter, the breath fogging up on your cor's windshield.
  • Brost formation on an overnight deposition on a frozen windshield.
  • Making milk ice cream freezing the perfuming scent that fills the creation of the room.
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Answer:

W = -120 KJ

Explanation:

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Formula for change in entropy is written as;

ΔS = Q/T

Where Q is amount of heat transferred.

Thus;

Q = ΔS × T

Q = -0.3 × 400

Q = -120 KJ

From the first law of thermodynamics, we can find the workdone from;

Q = ΔU + W

Where;

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W = Work done

Now, since it's an ideal gas model, the change in internal energy is expressed as;

ΔU = m•C_v•ΔT

Where;

m is mass

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Thus;

ΔU = m•C_v•ΔT = 0

ΔU = 0

From earlier;

Q = ΔU + W

Thus;

-120 = 0+ W

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This statement is false. Everything expands when heated
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