The pressure of a gas inside a piston-cylinder device is initially balanced by an atmospheric pressure of 100kPa and an elastic linear spring. The initial volume of the gas in the cylinder is 32e-6 m^3. Initially, the spring is uncompressed and exerts no force on the piston. The area of the weightless piston is 0.0004 m^2. Heat addition to the gas causes the piston to rise by 2 cm. k is 10 N / cm. Determine the final absolute pressure (kPa) of the gas. Neglecting work due to friction and atmospheric pressure, calculate the work (J) during expansion.