Question

During an isothermal expansion, a confined ideal gas does
–150 J of work against its surroundings. This implies that
(a) 150 J heat has been removed from the gas
(b) 300 J of heat has been added to the gas
(c) no heat is transferred because the process is isothermal
(d) 150 J of heat has been added to the gas

Answer 1

Answer:

d) 150 J of heat has been added to the gas.

Explanation:

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Answer 2

Answer:

150J gas has been removed from the gas opt:1

Explanation:

For isothermal process, change in temp=0 => change in internal energy, i.e; deltaU=0

=> Q=W

its given that work done is -ve.

therefore, Q is also -ve.

-ve sign of Q implies that heat is removed from the gas.

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