Heat & Enthalpy

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5 Terms

1
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What is the first law of thermodynamics?

ΔE = q + w (energy conserved)

2
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What does negative work mean?

Work done by the system: w = -PΔV

3
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Difference between endothermic and exothermic?

Endothermic absorbs energy; exothermic releases it.

4
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Formula for heat during phase change?

q = ΔH × n

5
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Formula for heat using specific heat?

q = m × c × ΔT