P10_Ideal_Gass

P10_Ideal_Gass - Gases Office hours change This week Fri...

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Gases
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Office hours change This week: Fri 10/7 1pm-3pm From now on: Fri 2pm-4pm (unless announced)
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Recall: Temperature Scales 3 Absolute or Kelvin scale Fahrenheit scale Celsius scale Water boils * 373.15 K 212 ° F 100 ° C Water freezes * 273.15 K 32 ° F 0 ° C Absolute zero 0 K - 459.67 ° F - 273.15 ° C (*) Values given at 1 atmosphere of pressure.
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4 The temperature scales are related by: ( 29 F 32 C F/ 8 . 1 C F ° + ° ° = T T 273.15 C + = Τ Τ Fahrenheit/Celsiu s Absolute/Celsius 30°C 86°F 25°C 77°F 20°C 68°F 15°C 59°F 10°C 50°F 5°C 41°F 0°C 32°F
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Question Which is smaller, a change of 1 o F or 1 o C? A) 1 o F B) 1 o C C) they are the same
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Gases
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Phases of Matter Slide 12-16
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Molecular Picture of a Gas 8 We can specify the amount of a substance by giving its mass or by the number of molecules (or atoms) it has. If we know the mass of a molecule we can go from one description to the other A golf ball weighs 1.6 ounces. I have a 20 lb box of golf balls I have a box of 200 golf balls Totally equivalent
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Molecular Picture of a Gas 9 If a sample contains a single substance (element or compound) the number of particles in the sample is N = M/m .
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P10_Ideal_Gass - Gases Office hours change This week Fri...

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