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CHEM 103: FINAL EXAM QUESTIONS WITH ALL CORRECT SOLUTIONS.
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Specific heat - Answer s=q/m△T, q=ms△T heat capacity - Answer C=q/△T, q=C△T Coffe cup calorimetry - Answer Sm= (-Mw)(Sw)(△Tw)/(Mm)(△Tm) Qwater=-Qmetal Coffee Cup calorimetry part 2 - Answer 1. Qsolid=(-Maq )(Saq) (△Taq) 2. Qsolid=-Qaq In Coffee calorimetry, in in...

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  • October 11, 2024
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  • 2024/2025
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CHEM 103: FINAL EXAM QUESTIONS
WITH ALL CORRECT SOLUTIONS.
Specific heat - Answer s=q/m△T, q=ms△T



heat capacity - Answer C=q/△T, q=C△T



Coffe cup calorimetry - Answer Sm= (-Mw)(Sw)(△Tw)/(Mm)(△Tm)

Qwater=-Qmetal



Coffee Cup calorimetry part 2 - Answer 1. Qsolid=(-Maq )(Saq) (△Taq)

2. Qsolid=-Qaq



In Coffee calorimetry, in increase in temperature - Answer means the reaction was "exothermic" and is
negative.



In coffee calorimetry, if the temperature drops during the reaction, - Answer then the reaction must be
endothermic and is positive.



System does work on surroundings (releases energy) - Answer -w



Surroundings does work on system (absorbs energy) - Answer +w



exothermic - Answer Releases heat, -q



endothermic - Answer Absorbs heat, +q



work - Answer transfer of energy from one form to another

, heat - Answer total kinetic energy that gets transferred from one substance/object to another



potential energy - Answer stored energy



kinetic energy - Answer energy of motion



Law of Conservation of Energy - Answer Energy cannot be created or destroyed.

△Esystem=-△Esurroundings



1kcal - Answer 1000 cal



Relationship between energy, heat, and work - Answer △E=q+w



energy as a product - Answer exothermic



energy as a reactant - Answer endothermic



system - Answer the "thing" being studied



surroundings - Answer the rest of the universe



What atoms can form expanded octets? - Answer S, P, Si, Cl



How do you find the best lewis structure? How do you know which lewis structures have resonance? -
Answer -The best lewis structure would be the lewis structure with the fewest charges possible

-If they have nonzero formal charges on one or two atoms in a lewis structure. If it is neutral, it does not
have a resonance



Resonance structures - Answer a set of structures that show how electrons are distributed. Used when
a single Lewis structure is insufficient

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