PEER ASSISTED STUDY SESSIONS Facil: Madi Wright Course: CHEM 1001 A,T & N Week: 2 Email: [email protected] Office: ML 408 Office Hour: Tuesdays 12:00-­‐1:00pm Lectures: Gases 1-­‐3 Textbook: Chapter 2 Topics: • Kinetic Molecular Theory • Pressure Units • Boyle’s Law • Charles’ Law • Combined Gas Law • Ideal Gas Law • Gas Densities • Mole Fractions • Dalton’s Law of Partial Pressures Opener: Introduce Yourself ☺ Lets Become an Expert on the Gas Laws! (10 minutes) (20 minutes) • Working in groups to become an expert on 1/6 gas laws • Teach the rest of the group your law • Six groups Match the categories together: a. Boyle’s Law _________ I. V ∝ n b. Charle’s Law _________ II. Vgas ∝ 1/p c. Avagardro’s Law _________ III. ptot = p1 + p2 + p3 + … d. Combined Gas Law _________ IV. Vgas ∝ T e. Ideal Gas Law _________ V. pV = nRT !"
f. Dalton’s Law _________ VI. V ∝ ! Short Answer Questions (10 minutes) 1. State the kinetic molecular theory. DISCLAIMER: PASS worksheets are designed as a study aid for use in PASS workshops only. Worksheets may contain errors, intentional or otherwise. It is up to the students to verify the information contained within. PEER ASSISTED STUDY SESSIONS Facil: Madi Wright Course: CHEM 1001 A,T & N Week: 2 Email: [email protected] Office: ML 408 Office Hour: Tuesdays 12:00-­‐1:00pm 2. What are the four ways in which molecules can store energy? 3. Are liquids compressible? Are gases compressible? Explain why or why not. Long Answer: (35 minutes) 1. A child is holding a balloon standing on the ground; the balloon initially has a pressure of 43.0 bar, a volume of 1.65 liters, and 20.1 moles. The temperature of the balloon on the ground is 22.6 degrees Celsius. The child lets go of the balloon, and it rises into the sky. The pressure of the balloon increases to 51.3 bar, expands to 1.85 liters and 24.5 moles. Does the temperature of the balloon increase of decrease as it rises into the sky? To what temperature? 2. a) 243.0mg of an unknown gas takes up 410 milliliters of space in a room, with a pressure of 1.63 bar and a 35.6 °C. Identify the unknown gas. DISCLAIMER: PASS worksheets are designed as a study aid for use in PASS workshops only. Worksheets may contain errors, intentional or otherwise. It is up to the students to verify the information contained within. PEER ASSISTED STUDY SESSIONS Facil: Madi Wright Course: CHEM 1001 A,T & N Week: 2 Email: [email protected] Office: ML 408 Office Hour: Tuesdays 12:00-­‐1:00pm 2. b) What is the density of the gas from part a? 3. a) Calculate the mean speed of Kr(g) atoms at 46 °C. 3. b) Calculate the mean free path of a Kr(g) atom under standard conditions. The diameter of a Kyrpton atom is approximately 0.38nm. DISCLAIMER: PASS worksheets are designed as a study aid for use in PASS workshops only. Worksheets may contain errors, intentional or otherwise. It is up to the students to verify the information contained within. PEER ASSISTED STUDY SESSIONS Facil: Madi Wright Course: CHEM 1001 A,T & N Week: 2 Email: [email protected] Office: ML 408 Office Hour: Tuesdays 12:00-­‐1:00pm Study Tips: (5 minutes) Come and hear some great study tips and hints specific for this course! They will really help you do well and reach your academic goals in CHEM 1001. Closer: Equation Race! (10 minutes) • How many equations can you remember that we learned today? • Without looking at your notes, you have 1 minute to write down as many equations as you can come up with DISCLAIMER: PASS worksheets are designed as a study aid for use in PASS workshops only. Worksheets may contain errors, intentional or otherwise. It is up to the students to verify the information contained within.