A substance that speeds up a chemical reaction without being consumed is called___. A. reactant B. product C. catalyst D. solute 相关知识点: 试题来源: 解析 C。解析:加快化学反应但自身不被消耗的物质叫催化剂。选项 A 反应物会被消耗;选项 B 产物是反应生成的;选项 D 溶质不是起这个作用。反...
A substance that takes part in a chemical reaction is called a ___. A. reagent B. product C. catalyst D. solvent 相关知识点: 试题来源: 解析 A。参与化学反应的物质叫试剂,“reagent”是试剂,“product”是产物,“catalyst”是催化剂,“solvent”是溶剂。反馈 收藏...
In a chemical reaction, the amount of substance G is twice that of substance H. If there are 8 grams of substance H, how many grams of substance G are there? A. 4 grams B. 8 grams C. 16 grams D. 32 grams 相关知识点:
The substance that speeds up a chemical reaction without being consumed itself is a ___. A. product B. reactant C. catalyst D. solvent 相关知识点: 试题来源: 解析 C。catalyst 是催化剂,能加快化学反应速度但自身不被消耗;product 是产物;reactant 是反应物;solvent 是溶剂。所以选催化剂。反馈...
The substance that can speed up a chemical reaction without being consumed is called ___. A. reactant B. product C. catalyst D. solvent 相关知识点: 试题来源: 解析 C。解析:能加快化学反应速率而自身在反应前后不发生变化的物质叫做催化剂(catalyst)。反应物是(reactant),产物是(product),溶剂是(...
Starting from cyclohex-2-enone and any other reagents needed, how would you prepare the given substance? (More than one step may be required.) What is the major product of the following reaction? Compound + HBr What is the major product formed in the reaction below?
The reaction zone is\nmonitored for the presence of the tagging substance, and when the\nsubstance is detected a trigger signal is generated to signal the\nstart of the reaction. By including a tagging substance with each\ncomponent of the reaction and by monitoring the reaction zone for\n...
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They found the high reactivity of the double bond, when less than 1% of the starting substance remained in the reaction mixture at a substrate/active chlorine ratio of 1/5 or higher. Initial products were also actively transformed further. Therefore, only 2,2-dichloro-3-hydroxy-3-...