I'm going to give you a glass case and in the glass case is an entity with this as one kilogram, by definition.
我给你一个玻璃箱,箱子里放的东西刚好是 1 千克,这是根据定义的
OK, delta H is delta of u plus pV. By definition that's how we define enthalpy up here.
好,ΔH=Δ,根据定义,这就是我们。
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