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1. After substance A was added to a beaker of water, the water temperature decreased. Which statement explains this phenomenon?
this process was exothermic and required hear from water substance was endothermic and required heat from water substance A caused the water to boil the water molecules moved faster none of the above

2. Work is defined as:
force over distance energy over time money over time speed over distance none of the above

3. 300. J of energy was released by solution A in a calorimeter. If the mass of solution A was 50.g and the T was 30.C, what is its specific heat capacity.
.20 J/C*g 20 J/C*g 1.2 J/C*g .7 J/C*g none of the above

4. What is pyrolytic cracking?
process in which larger kerosene molecules are broken down into smaller molecules of hydrocarbon a procedure in which a more a practical source of energy is produced the use of pyrotechnics to mine coal a process of coal conversion none of the above

5. 500mL of solution A at 23.0C is mixed with 500mL of solution B in a bomb calorimeter. The final solution has a density of 2.0g/mL, final temperature of 26.3C, and a specific heat capacity of 5.12 J/C*g. What is the enthalpy change per mole of the final solution?
3.3 x 104 J 3.37 x 104 J 1.7 x 104 J 1.68 x 104 J 2.4 x 104 J

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