All Questions
Tagged with sublimation thermodynamics
7 questions
3
votes
2
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Question regarding enthalpy of sublimation vaporization and fusion
While learning Thermochemistry, I came across the formula
$\Delta H_{sub} = \Delta H_{vap} + \Delta H_{fus}$
Now my question is how that when we want to change the phase of a substance from solid to ...
2
votes
2
answers
4k
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How does water sublimate at normal atmospheric pressures/conditions (i.e., without a phase boundary between solid and gas)?
I remember my high school chemistry teacher stating that water could sublime under normal atmospheric conditions that would exist in e.g., Lancaster County, PA, where Amish would hang clothes to dry ...
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2
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2
answers
870
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Internal energy for Phase Transitions
Can we justify that "For sublimation of a solid at 1 atm $\Delta U>0$ at low temperature and $\Delta U<0$ at high temperature?"
I read several answers and came to know that $U=f(T)$ ...
- 168
-1
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1
answer
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Calculate Heat of Atomisation [closed]
What is heat of atomisation of P4O6(s) Given heat of sublimation of P4O6 is x kJ/mol & P–O bond energy is y kJ/mol.
What is heat of atomisation of P4O6(s) Given heat of sublimation of P4O6 is x ...
11
votes
1
answer
10k
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What are the side effects of adding dry ice to a swimming pool?
My apartment complex pool was closed today due to a resident dumping a large quantity of dry ice into the pool. In the notification from my landlord, they stated:
Dry ice is frozen carbon dioxide ...
- 219
1
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0
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220
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How fast will hydrazine boil out of a tube into a vacuum?
For context I'm talking about ISEE-3 and how long it would take to dump the now useless and hazardous fuel it still carries.
Given a heated tank of hydrazine (somewhere near $0~^\circ\mathrm{C}$) ...
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39
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3
answers
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What is known about liquid carbon?
The wiki tells me that if you heat carbon at atmospheric pressure it eventually turns directly into a gas without being liquid first. At what pressure can you make liquid carbon? Has anyone actually ...
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