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Author Question: How much pressure must be applied to maintain equilibrium between liquid and gaseous oxygen at its ... (Read 16 times)

armygirl

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on: Jul 16, 2018
How much pressure must be applied to maintain equilibrium between liquid and gaseous oxygen at its critical temperature?
 
  a. 1 atm c. 43.9 atm
  b. 37 atm d. 49.7 atm

Question 2

The process whereby a solid directly becomes a gas is known as:
 
  a. latent heat. c. evaporation.
  b. sublimation. d. condensation.


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Loise Hard

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
When the atmospheric pressure is maintained at 49.7 atm, at a temperature of 119 C (oxygen's critical temperature), oxygen maintains an equal balance between its liquid and gaseous states.

Answer to Question 2

ANS: B
The direct change of state from solid to gas is called sublimation. Evaporation involves change from liquid to gas. Latent heat involves a change of state in matter of any form.


armygirl

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

nathang24

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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