He Gas Is Contained in a One-Liter Flask That Is

question 163

Multiple Choice

He gas is contained in a one-liter flask that is connected to an empty one-liter flask with a closed stopcock between the two flasks.When the stopcock is opened some of the He enters the evacuated flask.For this system

• A)ΔH is negative and ΔS is zero.
• B)ΔH is zero and ΔS is positive.
• C)ΔH is zero and ΔS is negative.
• D)ΔH is positive and ΔS is positive.

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