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Chem 104 exam 3 questions and answers
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Chem 104 exam 3 questions and answers
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Chem 104 exam 3 questions and answers Zeroth (0thLaw) - correct answer If two thermodynamic systems each are inthermal equilibrium with a third one, then they must be in
thermal equilibrium with each other
First (1stLaw) - correct answer Energy cannot be created or destroyed
Second (2ndLaw) - correct answer Entropy increases in all spontaneous processes
Third (3rdLaw) - correct answer The entropy of a pure perfect crystal is zero at absolute zero
What is an Intensive? - correct answer A property that is independent of the size of the system
Example of intensive - correct answer T emperature, density Chem 104 exam 3 questions and answers What is extensive? - correct answer A property that scales with the size of the system
examples of extensive properties - correct answer Mass (moles), Volume, weight, length
State function - correct answer A function or property that depends ONLY on the initial and final states of the system and independent of the path between
example of state function - correct answer P, V, T, E
Path function - correct answer A function or property that depends on the path taken b/w initial and final states
examples of path functions - correct answer q, w
internal Energy - correct answer Sum of all energies in a system Chem 104 exam 3 questions and answers ΔE = q + w - correct answer Mathematical Expression of the 1stLaw
+q - correct answer system gains heat
-q - correct answer lost energy in form of heat
+w - correct answer gained energy from work
-w - correct answer lost energy in form of work
Heat (q) - correct answer The transfer or exchange of thermal energy between the system and the surroundings
What are buffers? - correct answer Any solution that maintains an approximately constant pH despite small additions of strong acids or bases
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