【单选题】已知在 298K 时反应 2N 2 (g)+O 2 (g)==2N 2 O(g) 的 Δ r U m о 为 166.5kJmol -1 则该反应的 Δ r H m о 为
【简答题】收到一项应上缴财政专户的事业收入,内容为教育事业收入25 600元,具体为学费、学生住宿费等,款项已存入开户银行。
【单选题】连续自交可降低群体的杂合度,若P 0 为0代的杂合度,自交n代后,计算杂合频率的公式是()。
【简答题】连续自交可降低杂合度,若P0为0代的杂合度,自交n代后,计算杂合率的公式是 。
【简答题】All (communicate) with the north was stopped by the snowstorm.
【单选题】已知在298K时反应2N 2 (g)+O 2 (g)=2N 2 O(g)的∆ r U m θ 为166.5 kJ.mol -1 ,则该反应的∆ r H m θ 为()
【简答题】The North was by then firmly established as an ____ society. Labor was needed, but not slave labor.
【判断题】By the end of the Civil War, the North was in a state of political upheaval, social disorder and economic decay.
【单选题】已知在 298K 时反应 2N 2 (g)+O 2 (g)═2N 2 O(g) 的 D r U m q 为 166.5 kJ·mol - 1 ,则该反应的 D r H m q 为( )
【简答题】8. All __________ with the north was
stopped by the snowstorm.