Which of the following is a statement of the first law of thermodynamics?
A) Ek = 1/2mv2
B) A negative ΔH corresponds to an exothermic process.
C) ΔE = Efinal - Einitial
D) Energy lost by the system must be gained by the surroundings.
E) 1 cal = 4.184 J (exactly)
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