(a) One-third of a mole of He gas is taken along the path a b c shown as the solid line in Fig. P19.49. Assume that the gas may be treated as ideal. How much heat is transferred into or out of the gas? 

(b) If the gas instead went from state a to state c along the horizontal dashed line in Fig. P19.49, how much heat would be transferred into or out of the gas? 

(c) How does Q in part (b) com-pare with Q in part (a)? Explain.

Transcribed Image Text:

Figure P19.49 p(Pa) 4 x 105 3 x 105 2 x 105 1 × 10$ V(m³) 0.002 0.004 0.006 0.008 0.010