CHM2045 Chap 9 activity sheets

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State College of Florida, Manatee-Sarasota *

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2045

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Chemistry

Date

Dec 6, 2023

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pdf

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8

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CHM 2045C Chapter 9 Part 1 Pre-Class Name: _________________________________ 1. List and define the two main type of energy. a. _____________________________________________________ _____________________________________________________ b. _____________________________________________________ _____________________________________________________ 2. How do the concepts of system and surroundings relate to thermodynamics? ____________________________________________ ___________________________________________________________ ___________________________________________________________ 3. How does the Law of Conservation of Energy apply to thermodynamics? ___________________________________________________________ ___________________________________________________________ 4. What is internal energy? _______________________________________ ___________________________________________________________ 5. How does the value of D E change with respect to the energy flow from system to surrounding? _______________________________________ ___________________________________________________________ ___________________________________________________________ 6. What is a state function? _______________________________________ ___________________________________________________________ ___________________________________________________________ 7. How does the concept of heat and work affect the internal energy of a system? ____________________________________________________ ___________________________________________________________ ___________________________________________________________
CHM 2045C Chapter 9 Part 1 In-Class Name: _________________________________ 8. Determine the change in internal energy associated with a system that does 3152 J of work on the surrounding by absorbing 21.2 kJ of heat? 9. If a balloon expands from a volume of 0.200 L to 10.24 L under a pressure of 878mmHg, how much work (in kJ) is done? 10. Give the balanced equation for the formation of a mole of solid Al(C 2 H 3 O 2 ) 3 from its elements.
11. A 5.67g rock at 24.5 o C is heated to 67.9 o C with 214J of heat, what is the specific heat capacity for this rock? 12. A bomb calorimeter is used to determine the D E for 6.92g of unknown liquid. The initial temperature of the bomb is 23.78 o C and the final temperature is 36.71 o C, if the heat capacity constant for the bomb is 5.23 kJ/ o C then what is the D E (in kJ/mol) of the liquid? (molar mass of unknown is 53.7 g/mol)
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