CH101-Assignment 11

# CH101-Assignment 11 - happened while keeping all other...

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1. Check all of the following that are not postulates in the Kinetic Molecular Theory of Gases, as presented in the textbook. You should check anywhere from one to six boxes. There are no attractive forces between the particles The average kinetic energy of the particles is proportional to the absolute temperature The particles undergo constant, random motion All of these are postulates in the Kinetic Molecular Theory of Gases The pressure is proportional to the mass of the particles The average kinetic energy is proportional to the number of moles of particles The volume of the particles is negligible compared to the volume of the container 2. a) Which of the following gases has the greatest average kinetic energy? Ar at 20 o C H 2 at 10 o C He at 0 o C Ne at 30 o C b) Which of the following gases has the greatest average speed? CO 2 at 25 o C Cl 2 at 25 o C Cl 2 at 0 o C CO 2 at 0 o C 3. Make the following predictions based on the ideal gas law. For each effect, select the cause. Assume each response has

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Unformatted text preview: happened while keeping all other variables constant. a) If the pressure of a system increases, the temperature must have increased the number of moles must have decreased the volume must have increased b) If the temperature of a system decreases, the number of moles must have decreased the volume must have decreased the pressure must have increased c) If the volume of a system decreases, the temperature must have increased the number of moles must have decreased the pressure must have decreased 4. Indicate whether each of the following molecules is polar (p) or nonpolar (n). Your response should be a three letter word consisting of the letters p and n. For example, a response of npn would indicate that only CH 2 F 2 , the second molecule, is polar. Note: remember that you must consider the three dimensional structure of the molecules to answer the question. Answer: ppp...
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CH101-Assignment 11 - happened while keeping all other...

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