题干
- - His name is John.
A：What's your name?
B：What's the boy's name?
C：What is her name?
答案(点此获取答案解析）
B
CO(g)+H2(g)，CO(g)+H2O(g)
CO2(g)+H2(g) 当反应达平衡时，测得c(H2)=1.9 kJ·mol-1，c(CO)="0.1" kJ·mol-1，则CO2的浓度为