By Operating a Reversible Heat Engine with an Ideal Gas

Multiple Choice

By operating a reversible heat engine with an ideal gas as the working substance in a Carnot cycle and measuring the ratio Q_c/Q_h, we can calculate

A) n, the number of moles of the ideal gas.
B) the ratio V_c/V_h of the volumes of the ideal gas.
C) the ratio P_c/P_h of the pressures of the ideal gas.
D) the ratio P_cV_c/P_hV_h of the products of volumes and pressures of the ideal gas.
E) the value of Avogadro's number.