All Questions
Tagged with equilibrium pressure
41
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Pressure difference between a box and the outside atmosphere
Say I have a box of volume $V$, with an ideal gas inside it with temperature $T_b$. I don't know the number of particles inside it. The box is surrounded by the room's environment, which has ...
- 143
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Water level in pipe higher than surrounding body of water
I had a question about water pressures and level. We've recently drilled a near vertical hole underground 130m deep by 400mm in Dia into flooded lower underground workings as part of a de-watering ...
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What regulates the size of our atmosphere?
Our atmosphere is only about 100km thick before the official start of space. That is a mere 1.57307% of the radius of Earth (6,357km). The difference between the gratitational force at sea level and ...
- 393
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Is the pressure zero in thermal equilibrium? [duplicate]
In a canonical ensemble, we have $dU=TdS-pdV$. When we are in equilibrium, the energy $U$ is minimized. This implies that $\left(\frac{dU}{dV}\right)_S=0$. Since $\left(\frac{dU}{dV}\right)_S=-p$, we ...
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Intravenous therapy - why does blood come out of my body once the fluid is depleted? [closed]
The other day I wasn't feeling so well so I visited a doctor. He recommended that I take a break and get intravenous therapy so I did. I laid on a bed and the nurse inserted a needle into my left arm ...
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Does physical equilibrium occur at specific temperature and pressure?
Does physical equilibrium occur at only specific temperature and pressure? Like does equilibrium occur only at $ 1 atm $ and $0⁰C$ between water and ice? If I change temperature or pressure will the ...
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1
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111
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Osmotic pressure "equilibrium"?
Consider a box with two compartments separated by a semipermeable membrane. The first compartment is initially at pressure $P_0$ and contains the solvent ; the second compartment is initially at ...
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Temperature and pressure being equal at equilibrium (from first law of thermodynamics)
I have a question in which an insulated container of gas with volume $V$ is divided into two parts $V_1$ and $V_2$ by a movable barrier through which energy can pass, and need to show that, using the ...
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Equilibrium conditions established in the following scenario
If I was to create a setup as demonstrated below, where I have seperated a container into two halves of equal volumes, and in both halves, I half placed a different gas such that the final pressure ...
- 181
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290
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Is the pressure always the same for each phase of a two-phase system?
I am currently reading a textbook called Engineering and Chemical Thermodynamics but I am stuck in one part about the State Postulate and the Gibbs Phase Rule. The Gibbs Phase rule says that the ...
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Hydrogen in soap bubble
I read somewhere that if hydrogen gas is passed through soap solution bubbles containing hydrogen are formed. My question is how these bubbles are stable! Hydrogen has much less density and mass than ...
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287
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Why is bulk modulus positive in equilibrium?
$B=-PV/\Delta V$ The negative sign indicates that when pressure increases, the volume
decreases. That is, if $P$ is positive, $\Delta V$ is negative. Thus for a system in
equilibrium, the value of ...
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1
answer
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A gas immersed in a higher-pressure gas: spherical shape?
I'm considering a bubble of gas of some arbitrary shape immersed in another gas of higher pressure. There is no gravity (and hence no buoyancy), the gases are ideal (so there are no attractive forces ...
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Why (does/we assume) gas exert same pressure everywhere in a closed container?
I was reading about the gaseous state when this question struck my mind: What made us assume that, at every point inside the container, a gas exerts equal pressure? When one brings a barometer, is it ...
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Thermodynamic equilibrium state of constant $(p,S)$ system
The internal energy as a function of its natural variables is:
$$dU=-p dV+TdS$$
where $p$ is the system pressure and $dS$ includes only changes of the entropy due to heat transfer (the "...
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