Energy Balance On a Closed System
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Energy Balance On a Closed System

INSTRUCTOR: We’re gonna apply the first law to two closed systems, and then compare the final results. One’s a constant pressure system, piston and cylinder, pressure is .5 megapascals. The other is a fixed volume cylinder. They both contain one mole, and they’re starting at the same temperature, same pressure, so we’re starting at the […]

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What is the First Law of Thermodynamics?
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What is the First Law of Thermodynamics?

So here I have a balloon filled with hydrogen. It has a lot of chemical energy as hydrogen gas, when mixed with oxygen, is a very potent fuel. By igniting the balloon, I add energy and set off a reaction between hydrogen and oxygen that releases a lot of energy in the form of heat. […]

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