Question & Answer: A. A bomb calorimeter is used for precise determination of heat change accompanying a…..

(12) 8. Fill in the blanks/circle the correct answer: A bomb calorimeter is used for precise determination of heat change accompanying a reaction. A bomb calorimeter operates at a. i. Constant volume ii. Constant pressure iii. Constant pressure and temperature iv. Constant volume and pressure Provided with the following information determine the change in internal energy for the reaction below: b. 2 C2H, + 2 H,0 + 02 → 4 HCHO 4U--806 kJ/mol Which of the following entropy components contributes the least to the overall entropy of a substance (circle one)? c. Electronic Vibrational Rotational Translational d. As the temperature rises does the molar entropy of a sample of O2 (g) increase, decrease, or stay the same? Gases have (lower, higher, the same) to weaker bonding. e. internal energy as liquids due

A. A bomb calorimeter is used for precise determination of heat change accompanying a reaction. A bomb calorimeter operates at i. Constant volume ii. Constant pressure iii. Constant pressure and temperature iv. Constant volume and pressure b. Provided with the following information determine the change in internal energy for the reaction below: 2 C_2 H_2 + 2 H_2 O + O_2 rightarrow 4 HCHO delta_r U = -806 kJ/mol @ HCHO rightarrow C_2 H-2 + H_2 O + 1/2 O_2 delta_r U = _______ c. Which of the following entropy components contributes the least to the overall entropy of a substance?. Electronic Vibrational Rotational Translational d. As the temperature rises does the molar entropy of a sample of O_2 (g) increase, decrease, or stay the same? _______ e. Gases have (lower, higher, the same) _________ internal energy as liquids due to weaker bonding.

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