lecture 9 - molar specific heats

Lecture 9 molar - Announcements Prayer Please do this “Quick Writing” assignment while you’re waiting for class to start Ralph is confused

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Unformatted text preview: Announcements 1/26/11 Prayer Please do this “Quick Writing” assignment while you’re waiting for class to start: Ralph is confused because he knows that when you compress gases, they tend to heat up (think of a bicycle pump nozzle getting hotter as you force the gas from the pump to the tire). So, how are “isothermal” processes possible? How can you compress a gas without its temperature increasing? Demo Constant volume change, aka “alcohol rocket” Thought question How will the temperature of the gas change during this process from A to B? a. Increase b. Decrease c. First increase, then decrease d. First decrease, then increase e. Stay the same Reading quiz What is “C V ”? a. heat capacity b. mass-pacity c. molar heat capacity d. molar heat capacity, but only for constant volume changes e. your “curriculum vitae”, a detailed resumé Thought question Which will be larger, the molar heat capacity for constant volume changes or the molar heat capacity for constant pressure changes? heat capacity for constant pressure changes?...
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Lecture 9 molar - Announcements Prayer Please do this “Quick Writing” assignment while you’re waiting for class to start Ralph is confused

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