Carbon dioxide (CO2) gas undergoes a process in a closed
Chapter 6, Problem 6.38(choose chapter or problem)
Carbon dioxide \(\left(\mathrm{CO}_{2}\right)\) gas undergoes a process in a closed system from \(T_{1}=100^{\circ} \mathrm{F}, p_{1}=20 \mathrm{lbf} / \mathrm{in} .^{2}\) to \(T_{2}=400^{\circ} \mathrm{R}, \ p_{2}=50 \mathrm{\ lbf} / \mathrm{in} .^{2}\) The entropy produced due to internal irreversibilities during the process is determined to be \(0.15 \mathrm{Btu} /{ }^{\circ} \mathrm{R}\) per lb of gas. The carbon dioxide can be modeled as an ideal gas. Determine if the energy transfer by heat, Q, is positive (into the system), negative (out of the system), or zero.
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