Practice Worksheet WITH answers

Practice Worksheet WITH answers - An ideal gas is placed in...

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An ideal gas is placed in a container whose volume can be changed. Initially the gas has a volume of 3.00 m 3 , a temperature of 273 K, and a pressure of 1.013 x 10 5 N/m 2 . 1) What is the average kinetic energy of the gas molecules in the container? 2) An oxygen atom has a mass m = 2.65 x 10 -26 kg. If the gas is composed of monatomic oxygen, what is the average speed of the oxygen atoms in the gas? 3) A xenon atom has a mass m = 2.18 x 10 -25 kg. If the gas is composed of monatomic xenon, what is the average speed of the xenon atoms in the gas? 4) How many gas atoms are in the container? An aluminum cup with a mass of 0.100-kg contains 0.250 kg of glycerin. Both the cup and its contents have an initial temperature of 10°C. A 0.290-kg piece of iron at 180°C is placed in the cup. Eventually, the aluminum cup, the glycerin, and the iron all have a temperature of 38°C 5) How much heat leaves the iron? 6) How much heat enters the aluminum? 7) How much heat enters the glycerin? 8) What is the specific heat of glycerin?
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Answer: 5.65 x 10-21 J Answer: 2.52 x 103 J Answer: 6.53 x 102 m/s Answer: 1.60 x 104 J Answer: 2.28 x 102 m/s Answer: 2.29 x 103 J/kg·K Answer: 8.06 x 1025 atoms Answer: 1.85 x 104 J A 10-gram ice cube has been in a freezer at a temperature of -8.5°C for a long time. It is then removed from the freezer and placed in a 100-g aluminum cup containing an unknown amount of water. The cup and the water have an initial temperature of 20°C. Eventually, the cup contains nothing but water, and everything is at a temperature of 16°C. 9) How much heat did the ice cube gain as it warmed to its melting temperature? 10) How much heat did the ice cube gain as it melted? 11) How much heat did the melted water gain as it warmed to its final temperature? 12) How much heat did the aluminum cup lose during the entire process? 13) How much heat did the water that was initially in the cup lose during the entire process? 14) How much water was initially in the cup?
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Answer: 1.79 x 102 J Answer: 134 mol Answer: 3.33 x 103 J Answer: 1.96 kg Answer: 6.70 x 102 J Answer: 4.56 x 105 J Answer: 3.60 x 102 J Answer: 3.42 m3 Answer: 3.82 x 103 J Answer: 5.19 x 105 J; 6.34 x 104 J increase Answer: 0.228 kg Answer: 4.24 x 104 J Answer: 1.06 x 105 J Answer: 1.42 x 103 J/kg·K An ideal gas is placed in a container whose volume can be changed. Initially the gas has a volume
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Practice Worksheet WITH answers - An ideal gas is placed in...

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