A piston-cylinder device initially contains air at 150 kPa and 27°C. At this state, the volume is 400 litre. The mass of the piston is such that a 350 kPa pressure is required to move it. The air is now heated until its volume has doubled. Determine the final temperature.

In thermodynamics, temperature is a measure of an object's average total internal energy. This includes kinetic energy and other factors.  The thermodynamic temperature of a substance is directly proportional to the average kinetic energy of translational motion. The Boltzmann constant relates the thermodynamic temperature of a gas to the mean kinetic energy of an individual particle.  Temperature is also related to thermal equilibrium. Thermal equilibrium occurs when two bodies are in contact and can exchange energy. Systems are in thermal equilibrium when they have the same... Show more

In thermodynamics, temperature is a measure of an object's average total internal energy. This includes kinetic energy and other factors. 

The thermodynamic temperature of a substance is directly proportional to the average kinetic energy of translational motion. The Boltzmann constant relates the thermodynamic temperature of a gas to the mean kinetic energy of an individual particle. 
Temperature is also related to thermal equilibrium. Thermal equilibrium occurs when two bodies are in contact and can exchange energy. Systems are in thermal equilibrium when they have the same temperature. 
The zeroth law of thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other. 
 

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