What is the irony when people travel to Paris trying to leave all those troubles behind? (Para. 5) Their mind is most likely to solve their most _____problems while they are sitting in ______ in a Left Bank café.
【简答题】某温度、压强下,向可变容积的密闭容器中充入了3 L A和2 L B,发生反应3A(g)+2B(g) xC(g)+yD(g),达到平衡时,C的体积分数为m%。若维持温度、压强不变,将0.6 L A、0.4 L B、4 L C、0.8 L D作为起始物质充入此密闭容器内,达到平衡时,C的体积分数仍为m%,则有x=______,y=______。