Chem Quiz Ch 6

Chem Quiz Ch 6 - 1 Quiz 1 Temperature Change Upon Heat...

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1. Quiz 1 - Temperature Change Upon Heat Transfer (Points: 0.34) Calculate the final temperature when 2.50 kJ of energy is transferred as heat to 1.50 mol boron trifluoride, BF3, at 25 degrees C and 1 atm at constant volume. Provide your answer in degrees C. a. 67 b. 80 c. 92 d. 101 e. 125 Save Answer 2. Quiz 1 - Isothermal Reversible Process (Points: 0.33) If 2.00 mol of an ideal diatomic gas at 300 K and 3.00 atm expands from 6.00 L to 18.00 L and a final pressure of 1.20 atm isothermally and reversibly, which of the following is correct? a. w = +5.48 kJ, q = -5.48 kJ b. w = +3.65 kJ, q = -3.65 kJ c. w = -5.48 kJ, q = +5.48 kJ d. w = -3.65 kJ, q = +3.65 kJ e. w = -5.48 kJ, q = -5.48 kJ Save Answer 3. Quiz 1 - Change in Energy and Enthalpy (Points: 0.33) An ideal gas is compressed at a constant external pressure of 1.25 atm from 12.0 L to 7.5 L. Simultaneously, 275 J of heat are evolved. What are Delta H and Delta U, respectively, for this process? a. -275 J, +295 J b. -275 J, -845 J c. +570 J, -275 J d. +845 J, -570 J e. +275 J, -570 J Save Answer 4. Quiz 1 - Determining an Unknown Volume
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(Points: 0.33) An unknown volume of water at 18.2 deg C is added to 24.4 mL of water at 30.0 deg C. If the final temperature is 21.5 degrees C, what was the unknown volume of water added, in milliliters? (Assume that no heat is lost to the surroundings and that the density of water is 1.00 g/mL. The specific heat of water is 4.184 J/g - deg C.)
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This note was uploaded on 10/25/2010 for the course CHEM CHEM 6C taught by Professor Hoeger during the Spring '08 term at UCSD.

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Chem Quiz Ch 6 - 1 Quiz 1 Temperature Change Upon Heat...

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