Blake Lecture 11-14-08

Blake Lecture 11-14-08 - Blake 11-14-08 Chemistry Ex 1: If...

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Blake 11-14-08 Chemistry Ex 1: If the temperature of a gas occupying 2 L is decreased from 200 C to 100 C, what is the new volume? (P is constant) 1. 1 L 2. 1.58 L - ANSWER 3. 2.54 L 4. 4 L Ex 2: Which factor least directly affects the pressure of a gas? 1. The number of molecules 2. The mass of the molecules - ANSWER 3. The temperature of the molecules 4. The size of the container 5. All of the above directly affect the pressure of the gas Ex 3: Which results in a straight line? 1. The graph of V vs. P (n, T constant) A Curvy Graph – indirect; PV = nRT 2. The graph of n vs. T (P, V constant) Curvy as well; PV/R = nT 3. The graph of n vs. 1/T (P, V constant) - ANSWER K = nt Straight line 4. The graph of V vs. 1/T (P, n constant) N = (1/T * k) Curved line Typical Ideal Gas Law Problems If 0.5 moles of a gas in a 1.3 L container has a pressure of 730 torr, what else do you know about the gas? 1.
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Blake Lecture 11-14-08 - Blake 11-14-08 Chemistry Ex 1: If...

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