3 An ideal monatomic gas is confined in a cylinder by a spring-loaded piston of cross section 8.0 x 10 m. Initially the gas is at 300 K and occupies a volume of 2.4 x 10 m and the spring is in its relaxed state (figure 24-W9). The gas is heated by a small heater until the piston moves out slowly by 01 m. Calculate the final temperature of the gas. The force constant of the spring is 8000 N m, and the atmospheric pressure is 10 x 10 Nm2. The cylinder and the piston are -2 thermally insulated. The piston and the spring are massless and there is no friction between the piston and the cylinder. Neglect any heat-loss through the lead wires of the heater. The heat capacity of the heater coil is ooooooo Figure 24-W9