When an ideal gas undergoes a slow isothermal expansion:
A. the work done by the gas is the same as the energy absorbed as heat
B. the work done by the environment is the same as the energy absorbed as heat
C. the increase in internal energy is the same as the energy absorbed as heat
D. the increase in internal energy is the same as the work done by the gas
E. the increase in internal energy is the same as the work done by the environment
Answer: A. the work done by the gas is the same as the energy absorbed as heat
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