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exp7_ld - overcome(2 pts Answer 4 A student reacts 25.0 mL...

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Name Your name Lab Day and Time Day & Time TA TA's name Room Room C HEMISTRY 11L L EARNING D EVICE EXPT. Thermochemistry 7 For calculations, you must show all of your work and include appropriate units to receive full credit. Answers to the discussion questions should be in the form of complete sentences. 1. In a thermodynamic study a scientist focuses on the properties of a solution in a flask that is sealed with a stopper. a) What is the system in this study? (2 pts) Answer b) What are the surroundings in this study? (2 pts) Answer c) Is the system in this study a closed system? (2 pts) Answer 2. Name the following symbols (4 pts) a) q Answer b) H Answer c) T Answer d) K Answer 3. Name a practical problem encountered in experimental calorimetry and briefly discuss how it is
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Unformatted text preview: overcome? (2 pts) Answer 4. A student reacts 25.0 mL of 1.00 M HCl with 25.0 mL of 1.00 M NaOH in a calorimeter. What is the mass of the solution after the reaction has gone to completion? (Density of 0.5 M NaCl is 1.02 g/mL) (2 pts) Answer 5. Use the following standard enthalpy of reaction data 3 C (s) + 4 H 2 (g) → C 3 H 8 (g) ∆ H = -103.85 kJ/mol C (s) + O 2 (g) → CO 2 (g) ∆ H = -393.51 kJ/mol H 2 (g) + ½ O 2 (g) → H 2 O (g) ∆ H = -241.83 kJ/mol to calculate the heat of combustion of propane, C 3 H 8 . (6 pts) C 3 H 8 (g) + 5 O 2 (g) → 3 CO 2 (g) + 4 H 2 O (g) Answer...
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