Chapter 9 CHEM 112
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1
Which statement is true of the internal energy of a system and its surroundings during an energy exchange with a negative ΔEsys?
The internal energy of the system decreases and the internal energy of the surroundings increases.
2
What does q equal?
q = (mass) x (Cs) x (ΔT)
3
What does w equal?
w = -pΔV
4
What does Delta E equal?
ΔE = q+w
5
What is Delta E?
Internal energy change
6
What does Delta H equal?
∆H = q/moles(n)
7
Explain endothermic process
Endothermic takes in energy from surroundings
8
Explain exothermic process
Exothermic releases energy into the surroundings
9
Is the process of forming bonds positive or negative?
Negative
10
Is the Delta H of a endothermic process positive or negative?
Positive
11
Is the Delta H of a exothermic process positive or negative?
Negative
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