An Ideal Gas, Consisting of N Moles, Undergoes a Reversible

question 4

Multiple Choice

An ideal gas, consisting of n moles, undergoes a reversible isothermal process during which the volume changes from V_i to V_f.The change in entropy of the thermal reservoir in contact with the gas is given by:

• A)nR(V_f - V_i)
• B)nR ln(V_f - V_i)
• C)nR ln(V_i/V_f)
• D)nR ln(V_f/V_i)
• E)none of the above (entropy can't be calculated for the thermal reservoir)

---

Definitions:

Lagrangian Technique

A mathematical method used in economics and engineering to find the maximum or minimum values of a function subject to constraints.

Optimal Capital/Labor Ratio

The most efficient mix of capital and labor that maximizes output or minimizes cost for producing a given level of output.

Production Function

An equation that describes the maximum output of a firm, given the quantity of inputs.

Variable Cost Function

A mathematical representation of the costs that vary with the level of output or activity, unlike fixed costs.