An Ideal Gas (The System) Is Contained in a Flexible

question 33

Multiple Choice

An ideal gas (the system) is contained in a flexible balloon at a pressure of 1 atm and is initially at a temperature of 20.°C. The surrounding air is at the same pressure, but its temperature is 25°C. When the system has equilibrated with its surroundings, both systems and surroundings are at 25°C and 1 atm. In changing from the initial to the final state, which one of the following relationships regarding the system is correct?

• A) .  E < 0
• B) .  E = 0
• C) .  H = 0
• D) w > 0
• E) q > 0

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