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When a scientist heats a sample of nitrogen from -209 °C to -200 °C it remains in the state of liquid because Nitrogen become freeze at -210 degree centigrade and become gas after -195.8 degree centigrade.
What exactly is the first thermodynamics law?
Turning heat energy into work is a common way for power plants and engines to run. The rationale is that mechanical turbines or pistons can move as a result of work that a hot gas can perform. The first law of thermodynamics applies the idea of energy conservation to systems where the means of transporting energy into and out of the system are heat transfer and performing work.
According to the first law of thermodynamics, a system's internal energy change is called a UU, U is the sum of the net work performed on the system WWW and the net heat transfer into the system QQQ. The first law of thermodynamics is expressed as an equation,
A gas (such as air or helium) contained in a container with a snugly fitted moving piston best illustrates the first rule of thermodynamics (as seen below). We'll assume that the piston can rise and fall, compressing or releasing the gas (but no gas is allowed to escape the container).
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