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May 9, 2012

May 9, 2012. AGENDA: 1 – Bell Ringer & Part. Log 2 – CN: Ideal Gas Law 3 – Practice Problem 4 – Summary 5 – Start Ideal Gas Law HW. Today’s Goal: Students will be able to apply the Ideal Gas Law to solve for P, V, T, or n. Homework Ideal Gas Law Practice

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May 9, 2012

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  1. May 9, 2012 AGENDA: 1 – Bell Ringer & Part. Log 2 – CN: Ideal Gas Law 3 – Practice Problem 4 – Summary 5 – Start Ideal Gas Law HW Today’s Goal: Students will be able to apply the Ideal Gas Law to solve for P, V, T, or n. Homework • Ideal Gas Law Practice • Work from Week 33 is due Friday. • Make up QUIZ 17 by Monday 5/14/12.

  2. Predict Analyze Formulate • Topic:Ideal Gas Law • Date:5/9/2012 • (P,V) are inversely related. • (P,T) and (V,T) are directly related. Boyle’s P1V1 = P2V2 Charles’ V1 = V2 T1 T2 Lussac’s P1= P2 T1T2 Combined Gas Law = P1V1 = P2V2 T1 T2

  3. Predict Analyze Formulate • Topic:Ideal Gas Law • Date:5/9/2012 • Avogadro’s Principle (1811) • An observation that is an extension of KMT • All gases are assumed to have the same particle size.  Equal volume of 2 gases will have the same # of particles! For any gas: 6.02 x 1023 particles = 22.4 L 1 mol 1 mol Amedeo Avogadro

  4. Predict Analyze Formulate • Topic:Ideal Gas Law • Date:5/9/2012 • Ideal Gas Law relates pressure (P), volume (V), temperature (T) and number of moles (n) of gas. PV = n R T Pressure of gas (atm) Temp. of gas (K) Moles of gas (mol) Gas constant 0.0821 (L·atm/mol·K) Volume of gas (L)

  5. Also be sure to write your NOTES SUMMARY! • Topic: Ideal Gas Law • Date: 5/9/2012 Practice Problem: A 2.0L sample of gas has a pressure of 1.5atm. If 5.0 moles occupy the sample, what is the temperature? P = 1.5atm V = 2.0L n = 5.0mol R = 0.0821 L·atm/mol·K T = x PV = nRT (1.5)(2.0) = (5.0)(0.0821)x 3 = (0.4105)x 0.4105 0.4105 x= 3/0.4105 x = 7.308K = T

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