A monatomic ideal gas undergoes an isothermal expansion at 300 K, as the volume increased from 0.020 m³ to 0.040 m³. The final pressure is 120 kPA. The ideal gas constant is R = 8.314 J/mol ∙ K. The heat transfer to the gas is closest to A) 3.3 kJ. B) 1.7 kJ. C) -3.3 kJ. D) -1.7 kJ. E) 0.00 kJ.

Question

Quizplus · Accepted Answer

For an isothermal process, the heat transfer (Q) is equal to the work done (W) on/by the gas. Using the formula W = nRT ln(Vf/Vi), where n is the number of moles, R is the gas constant, T is the temperature, and Vf and Vi are the final and initial volumes, we find Q ≈ 3.3 kJ.

A Monatomic Ideal Gas Undergoes an Isothermal Expansion at 300