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Strike441 [17]
3 years ago
14

A cooling curve has two flat lines, or plateaus. What does the plateau at the higher temperature represent?

Chemistry
2 answers:
olga55 [171]3 years ago
6 0

Answer: condensation

Explanation: because of condensation is when gas becomes liquid, and is the higher plateaus in the cooling curve

blagie [28]3 years ago
5 0

Answer:

It is in the state of "thermal arrest"

Explanation:

The temperature stays constant during the phase change process . This is because the matter has more internal energy and heat has to be taken away for the solidification process to begin. The energy that is required for a phase change is know as latent heat (which is the energy released or absorbed by a body during a thermodynamic process).

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An unknown gas contains 5.4 moles in 34 mL. If the amount of gas increases to 6.2 moles, what is the new volume?
Murljashka [212]

At constant temperature and pressure, If the amount of gas increases to the given value, its volume also increases to 39 mL.

<h3>What is Avogadro's law?</h3>

Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."

It is expressed as;

V₁/n₁ = V₂/n₂

Given the data in the question;

  • Initial amount of gas n₁ = 5.4moles
  • Initial volume v₁ = 34mL = 0.034L
  • Final amount of gas n₁ = 6.2moles
  • Final volume v₂ = ?

We substitute our values into the expression above.

V₁/n₁ = V₂/n₂

V₁n₂ = V₂n₁

V₂ = V₁n₂ / n₁

V₂ = (0.034L × 6.2moles) / 5.4moles

V₂ = 0.2108molL / 5.4mol

V₂ = 0.039L

V₂ = 39 mL

Therefore, at constant temperature and pressure, If the amount of gas increases to the given value, its volume also increases to 39 mL.

Learn more about Avogadro's law here: brainly.com/question/15613065

#SPJ1

6 0
3 years ago
Can someone please help me
Margarita [4]

I think it is the first choice

Hope that helped!

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