CHEM 103: FINAL EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS 100% CORRECT!!!

CHEM 103: FINAL EXAM QUESTIONS
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
Specific heat
s=q/m△T, q=ms△T



heat capacity
C=q/△T, q=C△T



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



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



In Coffee calorimetry, in increase in temperature


means the reaction was "exothermic" and is negative.

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




System does work on surroundings (releases energy)
-w



Surroundings does work on system (absorbs energy)
+w



exothermic
Releases heat, -q



endothermic
Absorbs heat, +q



work
transfer of energy from one form to another



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

, potential energy
stored energy



kinetic energy
energy of motion



Law of Conservation of Energy
Energy cannot be created or destroyed.
△Esystem=-△Esurroundings



1kcal
1000 cal



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



energy as a product
exothermic



energy as a reactant
endothermic