If a Gas Expands Freely into a Vacuum

question 76

Multiple Choice

If a gas expands freely into a vacuum,

• A)the expansion is adiabatic, so the gas does work on its environment and its internal energy decreases.
• B)the expansion is isothermal.
• C)the expansion is occurs at constant pressure.
• D)the expansion is adiabatic but no work is done, so the internal energy of the gas and its temperature both decrease.
• E)the expansion is adiabatic but no work is done, so the internal energy of the gas and its temperature do not change.

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