(a) How many moles of gas are in the sample? mol (b) What is the temperature of

Question

(a) How many moles of gas are in the sample?
mol

(b) What is the temperature of the gas atpoint b?
K

(c) What is the temperature of the gas atpoint c?
K

(d) What is the net energy added to the gas as heat during thecycle?
J

Explanation / Answer

a) We know that            P V =n R T    ==> n = P V / R T              = 2.5 x 103 * 1 / 8.314 * 325              = 0.9252 moles b) P V = n R T     7.5 x 103 * 3 = 0.9252 * 8.314*Tb     ==> Tb = 2925 K c) P V = n R T     2.5 x 103 * 3 = 0.9252 * 8.314 *Tc     ==> Tc = 975 K d) net energy added to system = 0.5 nR T = 0.5 n R(Ta - Ta) = 0 J

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