Question #52089

An ideal gas undergoes a cycle of processes as shown in the p-V diagram gases . Which statement correctly describes the situation?

Click here to see exhibit

The internal energy of the gas increases over one complete cycle

Over the entire cycle, work is done by the gas.

The gas absorbs more heat than it releases heat over the whole cycle

The gas gives out more heat than it absorbs over the whole cycle.

2 A fixed mass of an ideal gas slowly releases 1500 J of heat and as a result contracts slowly, at a constant pressure of 2.0 x 104 Pa, from a volume of 0.050 m3 to 0.025 m3 . What is the effect on the internal energy of the gas?

It decreases by 2000 J.

It decreases by 1000 J.

It is unchanged.

It increases by 1000 J.

Click here to see exhibit

The internal energy of the gas increases over one complete cycle

Over the entire cycle, work is done by the gas.

The gas absorbs more heat than it releases heat over the whole cycle

The gas gives out more heat than it absorbs over the whole cycle.

2 A fixed mass of an ideal gas slowly releases 1500 J of heat and as a result contracts slowly, at a constant pressure of 2.0 x 104 Pa, from a volume of 0.050 m3 to 0.025 m3 . What is the effect on the internal energy of the gas?

It decreases by 2000 J.

It decreases by 1000 J.

It is unchanged.

It increases by 1000 J.

Expert's answer

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