People buying food in sealed bags at high elevations often notice that the bags are puffed upbecause the air inside has expanded. A bag of pretzels was packed at a pressure of 1.00 atmand a temperature of 22.0◦C. When opened at a summer picnic in Santa Fe, New Mexico, ata temperature of 32.0◦C, the volume of the air in the bag is 1.38 times its original volume.What is the pressure of the air?
Kinetic Theory of Gas
The Kinetic Theory of gases is a classical model of gases, according to which gases are composed of molecules/particles that are in random motion. While undergoing this random motion, kinetic energy in molecules can assume random velocity across all directions. It also says that the constituent particles/molecules undergo elastic collision, which means that the total kinetic energy remains constant before and after the collision. The average kinetic energy of the particles also determines the pressure of the gas.
P-V Diagram
A P-V diagram is a very important tool of the branch of physics known as thermodynamics, which is used to analyze the working and hence the efficiency of thermodynamic engines. As the name suggests, it is used to measure the changes in pressure (P) and volume (V) corresponding to the thermodynamic system under study. The P-V diagram is used as an indicator diagram to control the given thermodynamic system.
2. People buying food in sealed bags at high elevations often notice that the bags are puffed upbecause the air inside has expanded. A bag of pretzels was packed at a pressure of 1.00 atmand a temperature of 22.0◦C. When opened at a summer picnic in Santa Fe, New Mexico, ata temperature of 32.0◦C, the volume of the air in the bag is 1.38 times its original volume.What is the pressure of the air?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 6 images
