填空题:CO2和KO2有下列反应:4KO2+2CO2→2K2CO3+3O24KO2+4CO2+2H2O→4KHCO3+3O2若9 题目分类:化学 题目类型:填空题 查看权限:VIP 题目内容: CO2和KO2有下列反应: 4KO2+2CO2→2K2CO3+3O2 4KO2+4CO2+2H2O→4KHCO3+3O2 若9 mol CO2在密封舱内和KO2反应后生成9 mol O2,则反应前密封舱内H2O的量应该是多少?列式计算。 参考答案: 答案解析:
现代工业使得大气中CO2的浓度不断提高,这一环境变化趋势更有利于______。A.水稻生长,因为超过一定的胞间CO2浓度 现代工业使得大气中CO2的浓度不断提高,这一环境变化趋势更有利于______。A.水稻生长,因为超过一定的胞间CO2浓度后玉米的酶活性不再增加B.水稻生长, 分类:化学 题型:填空题 查看答案
-- How about camping this weekend, just for a change?-- OK,_ -- How about camping this weekend, just for a change?-- OK,__________ you want.A 分类:化学 题型:填空题 查看答案
What kind of people does "secret Santas" in the passage refe What kind of people does "secret Santas" in the passage refer to? 分类:化学 题型:填空题 查看答案
Part 1VWriting (45 marks)Section A (10 marks)Directions: Rea Part 1VWriting (45 marks)Section A (10 marks)Directions: Read the following pass 分类:化学 题型:填空题 查看答案
What can be the best title for the passage? What can be the best title for the passage?A.The Eye as the Window to the Soul B 分类:化学 题型:填空题 查看答案