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实际上没有一种气体完全符合理想气体状态方程，但在压...
实际上没有一种气体完全符合理想气体状态方程，但在压力足够低，温度足够高，即密度足够小的情况下，例如在常温低压下，CH4分子本身体积小，分子间距大，分子间引力小，因而其pVT特性接近理想气体的规律。In fact, no gas completely conforms to the ideal gas state equation, but when the pressure is low enough, the temperature is high enough, that is, the density is low enough. For example, at room temperature and low pressure, CH4 molecule itself has small volume, large molecular spacing, and small gravitational attraction between molecules, so its pVT characteristics are close to the law of ideal gas.
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(b=2.67×10^-5 m^3/mol) (1) 计算1mol该气体在298 K，1Mpa下，反抗恒外压100kPa恒温膨胀过程所作的功； (2) 若该气体为理想气体，经历上述过程做功多少？ (3) 计算过程（1）的DU,DH,DS,DF,DG; (4) 选择合适判据判断过程可逆性
