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Definition
The amount of heat (J) required to raise the temperature of a body (of any mass) 1 degree Celsius.
Q= mcΔT
m= mass
c= specific |
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Definition
The amount of energy needed to raise the temperature of a substance by 1°C.
represented by 'c' |
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Term
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Definition
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Definition
| energy transferred btwn two species as a result of differences in their temperatures. |
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Term
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Definition
for any system at a constant pressure, the heat lost or gained.
unit: J |
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Term
first law of thermoynamics
give equation and definition |
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Definition
ΔU= Q- W
change in the total internal energy of a system is equal to the amount of heat transferred (Q) minus the work ( W). |
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Term
what are standard conditions used for measuring
ΔG,ΔH,ΔS |
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Definition
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| t or f: can the entrophy of a spontaneous rxn decrease? |
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Definition
true,
Δ G= ΔH- T ΔS
(25- 100)= neg
(25-50)= still neg |
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Term
| true or false: entrophy is a measure of the randomness in a system |
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Definition
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true or false:
the entrophy of a amphous solid is greater than that of a crystalline solid. |
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Definition
true; an amphous solid's atoms aren't highly ordered like a crystalline solid.
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| true or false: at a constant temperature and pressure,the entrophy of the universe cannot spontaneously incease. |
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Definition
| false, under these conditons the entrophy does increase spontaneously. |
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Term
| what is the critical point as noted on a phase diagram? |
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Definition
| differences btwn the properties of 2 phases disappear |
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Term
| describe the energy level of a transition state or an activated complex |
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Definition
| has greater energy than either the reactants or the products |
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