Problem Set 11

# Problem Set 11 - Problem Set XI Assign Due December 6 2006...

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Problem Set XI- Assign November 27, 2006 Due December 6, 2006. Fall 2006 Physics 200a R. Shankar 1. How much heat is needed to convert 1 kg of ice at - 10 0 C to steam at 100 0 C ?. Remember ice and water do not have the same speci±c heat. 2. If 400 g of ice at - 2 0 C is placed in 1kg of water at 21 0 C what is the end product when equilibrium is reached? 3. To ±nd c X , the speci±c heat of material X , I place 75 g of it in a 30 g copper calorimeter that contains 65 g of water, all initially at 20 0 C . When I add 100 g of water at 80 0 C , the ±nal temperature is 49 0 C . What is c X ? 4. How many moles of ideal gas are there in a room of volume 50 m 3 at atmospheric pressure and 300 K ? 5. A spherical air bubble of radius 2 cm is released 30 m below the surface of a pond at 280 K . What is its volume when it reaches the surface which is at 300 K assuming it is in thermal equilibrium the whole time? Ignore the size of the bubble compared to other dimensions like 30 m . 6. What is the volume of one mole of an ideal gas at STP: Standard Temperature

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Problem Set 11 - Problem Set XI Assign Due December 6 2006...

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