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1.向下表中的甲物质中逐滴加入乙溶液至过量,反应过程中产生的气体或沉淀的质量与加入乙的质量关系符合图中曲线描述的是()2.小欣做实验时发现,实验室中的试剂瓶大多是玻璃塞,但盛放碱溶液的试剂瓶却是橡皮塞。她对这
1. Add the B solution dropwise to the substance A in the below table to excess. The relationship between the quality of the gas or precipitate produced during the reaction and the mass of B added is in accordance with the curve in the figure. () 2. Xiao Xin It was found that the reagent bottles in the laboratory were mostly glass stoppers, but the reagent bottles containing the alkaline solution were rubber stoppers. She is on this