【单选题】As summer rolls around, lawmakers in Washington are preparing to vote on a jobs bill that would include $1 billion for summer jobs for teens. Much of the urgency for the program stems from the private...
【单选题】一定温度下,在一个容积为1L的密闭容器中,充入1mol H 2 (g)和1mol I 2 (g),发生反应H 2 (g)+ I 2 (g) 2HI(g),经充分反应达到平衡后,生成的HI(g)的气体体积的50%,在该温度下,在另一个容积为2L的密闭容器中充入1mol HI(g)发生反应HI(g) H 2 (g)+ I 2 (g),则下列判断正确的是