题目内容
焓（H）是一个状态性质，其变化量只与系统的始态和终态有关。
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H=U+pV，因为p、V、U均为状态性质，所以H也是一个状态性质。
因为热Q不是状态性质，所以定压热Qp不仅与系统的始态和终态有关，还与系统的变化途径有关。
系统变化过程中体积不变，且只做体积功不做其他功，则系统的QV=？
问题：Why was the little boy in long sleeves very popular?作答：The little boy was popular because he his shirt with long sleeves up in to a ball that the kids used to play. Without any sports , the “shirt ball” gave the kids an to play.
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