110 Fa08 ex3 A

110 Fa08 ex3 A - CHEMISTRY 110 EXAM 3 November 10, 2008...

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CHEMISTRY 110 EXAM 3 November 10, 2008 FORM A ------------------------------------------------------------------------------------------------------------ 1. The height of the column of mercury in the open ended manometer shown is found to be 65 mm. If the external pressure is 1.06 atm, what is the gas pressure inside the bulb? A. 0.85 atm B. 0.97 atm C. 1.15 atm D. 1.71 atm E. The pressure cannot be determined from the information given. --------------------------------------------------------------------------------------------------------- 2. A closed container of O 2 gas exhibits a pressure of 900 torr at 23°C. Calculate the pressure of O 2 at 50°C. Assume constant volume. A. 0.54 atm B. 1.00 atm C. 1.29 atm D. 2.57 atm E. 26.0 atm ------------------------------------------------------------------------------------------------------------ 3. Calculate the density of H 2 S gas at 27.0°C and 2.00 atm. A. 2.61 g/L B. 2.76 g/L C. 0.0270 g/L D. 34.0 g/L E. 3.40 g/L ------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------ 4. Gases deviate least from ideal behavior at _________. A. low temperatures and high pressures B. high temperatures and high pressures C. high temperatures and low pressures D. when they are subliming from a solid E. All of the above. ------------------------------------------------------------------------------------------------------------ 5. Which of the following gases is considered to contribute significantly to the greenhouse effect? A. H 2 B. He C. O 2 D. N 2 E. H 2 O ------------------------------------------------------------------------------------------------------------ 6. The process indicated by the arrow in the phase diagram below is a pressure increase at constant temperature. What phase change occurs in this process and is this phase change exothermic or endothermic? A. condensation: exothermic B. sublimation: exothermic C. melting: endothermic D. evaporation: endothermic E. condensation: endothermic ------------------------------------------------------------------------------------------------------------ 218 1 0.006 0.01 100 374 pressure (atm) temperature ( ° C)
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------------------------------------------------------------------------------------------------------------ 7. The specific heat of bromine liquid (Br 2 ) is 0.226 J/g-K. What is the molar heat capacity of bromine liquid? A. 707 J/mol-K B. 36.1 J/mol-K C. 18.1 J/mol-K D. 9.05 J/mol-K E. 0.226 J/mol-K ---- ---------- ---------------------------------------------------------------------------------------------- 8. Which of the following is not a strong electrolyte in aqueous solution? A.
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110 Fa08 ex3 A - CHEMISTRY 110 EXAM 3 November 10, 2008...

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