Friday, May 19, 2017

Principles of Thermodynamics




A gas expands and does 82.7 J of work on the surroundings. At the same time, the gas loses 103 J of energy to the surroundings as heat. What is the change in the internal energy of the gas? would this be ΔE = q + w (-103) + (82.7) = -20.3. I get confused with the positive and negative charges.




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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions

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