One mole of an ideal monoatomic gas is compressed isothermally in a rigid vessel to double its pressure at room temperature, 27°C. The work done on the gas will be

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(2) 300R ln 2. Isothermal compression at T=300 K with the pressure doubled, so the volume halves. Wₒₙ=nRT ln (P₂)/(P₁)=1× R×300×ln 2=300R ln 2. The stem says "in a rigid vessel", which would forbid any volume change at all; the calculation the options expect is the ordinary isothermal one. Listed in DEFECTS.md.

One mole of an ideal monoatomic gas is compressed isothermally in a rigid vessel to double its pressure at room temperature, 27°C. The work done on the gas will be

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Why the other options are wrong