An ideal gas initially at P, V, and T; is taken through a cycle as shown below. (Let the factor n = 3.9.) nP P B P₁ nVi (a) Find the net work done on the gas per cycle for 1.70 mol of gas initially at 0°C. 5,4 x Your answer cannot be understood or graded. More Information KJ (b) What is the net energy added by heat to the system per cycle? 960 When the system returns to its starting point, how is the work done on the gas related to the heat added to the gas? KJ A pair of eyeglass frames is made of epoxy plastic. At room temperature (20.0°C), the frames have circular lens holes 2.10 cm in radius. To what temperature must the frames be heated if lenses 2.12 cm in radius are to be inserted in them? The average coefficient of linear expansion for epoxy is 1.3 x 10-4 (°C) 1. ос