[问答题]
One liter of air is cpffvjhta-l m++9zva h1,c, d4x66 jd mooled at constant pressure until its volume is halved,t7 u0bfzp; 8rf) ntak+ and then it is allowed tot bzru7+ank8)pf 0f;t expand isothermally back to its original volume. Draw the process on a PV diagram.
