【单选题】在某温度下反应 N 2 O 4 (g) = 2NO 2 达平衡时 N 2 O 4 (g) 和 NO 2 (g) 的分压为 p e (N 2 O 4 ) = 69.79kPa , p e (NO 2 ) = 31.54kPa , 若反应在 298.15K 时标准平衡常数 k p θ = 0.113 ,则经验平衡常数 k c 为( ) .
【简答题】This year the selfie earned its place as the Oxford English Dictionary’s 2013 Word Of The Year.It has taken over our culture-and our smartphones.The rise of the selfie has become universal-between pre...