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According to a NASA page, the density in the middle of the Sun is about 150 g/cm3. That's about 9 × 1025 protons in a 1cm3 box, or 450 million to a side, and using that spacing for a voltage calculation reveals a typical interaction energy of 65 eV or so. (If you've never seen this unit before, that is the energy used by a 1V battery to move an electron's ...


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The Title is not matching the description. Answer as per title will be : Yes one can do this but it is usually done the other way. In most of the books first the equation PV=mRT (R is gas constant whose value depend on nature of gas) is established then they use avogadros principle to state it in molar form as PV=(nM)RT ; V/n=MRT/P ...


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The reason for why you do not need to supply any energy is because there is no net work done. Lets assume for a second your container exists in a vacuum. This is essentially an isolated system, not considering black body radiation. This means that none of the energy contained in the box ever escapes and is doomed to stay in the box for all eternity. If ...


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The real reason is that the gas and container are assumed to be in thermal equilibrium. If the container could radiate into void, then the pressure would slowly decline as the temperature fell. The ideal gas law ignores inter-molecular forces and the finite size of molecules, so eventually the gas will condense and other forces, other than elastic ...


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Pressure of a gas comes from the average, collective change of momentum as its particles bounce against each other and the walls of anything encountering it. What gravity does is provide a counter-pressure - the weight of the gas itself - which stops it from expanding freely into space. The weight of the air above Earth's surface averages about 101,325 ...


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It's true. Special equipment and a long time is required to mix helium and nitrogen. According to one study, a mixture of 2.7% He, 93.3% N at 800 p.s.i.g. required a special cradle to repeatedly upend the cylinder, and 20.5 hours to reach equilibrated gas, which then remained mixed: http://pubs.acs.org/doi/abs/10.1021/je60005a002. The helium repeatedly ...


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Assuming this can be treated as a classical ideal gas, by the equipartition theorem $$U=\frac{3}{2}N k_B T$$ and the ideal gas law $$PV=Nk_B T$$ we find that the internal energy is $$U=\frac{3}{2}PV$$ Therefore, the internal energy is multiplied by a factor of 5 in this process. Energy is a state function; this is why we can determine the change in ...


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It is wise to look at what paramagnetism is Materials may be classified by their response to externally applied magnetic fields as diamagnetic, paramagnetic, or ferromagnetic. These magnetic responses differ greatly in strength. Diamagnetism is a property of all materials and opposes applied magnetic fields, but is very weak. Paramagnetism, when ...


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Magnetic forces follow the superposition principle which mandates that the net field at a point due to the field of two or more objects is equal to only the vector sum of the two fields. So yes, the force is just doubled, and the force between the molecules don't matter. Edit after question update: Only under the influence of an external field do the ...



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