Good.brutalmadness said:b) Q=W, so:
How did that negative sign sneak in? (W is positive, so Q is positive.)Q=-3400 J
The First Law of Thermodynamics is a fundamental principle in physics that states that energy cannot be created nor destroyed, but can only be transferred or converted from one form to another.
The First Law of Thermodynamics applies to all systems, including ideal gases. It states that the change in internal energy of a closed system is equal to the heat added to the system minus the work done by the system. This means that for an ideal gas, the change in internal energy is solely dependent on the heat added to the system.
An ideal gas is a theoretical gas that follows the ideal gas law, which describes the relationship between pressure, volume, and temperature. It is characterized by having particles that have no volume and do not interact with each other, and therefore follow the laws of classical mechanics.
Real gases do not behave exactly like ideal gases, as they have volume and do interact with each other. However, the First Law of Thermodynamics still applies to real gases, as it is a fundamental principle that applies to all systems. The only difference is that the change in internal energy of a real gas is not solely dependent on the heat added, but also on its interactions with other particles.
The First Law of Thermodynamics and ideal gases have many practical applications, including in the fields of thermodynamics, chemistry, and engineering. For example, they are used in the design and operation of engines, refrigeration systems, and power plants. They are also important in understanding the behavior of gases in various industrial processes and in the study of atmospheric phenomena.