A catalyst is a substance that ___. A. slows down a reaction B. is consumed in the reaction C. increases the rate of a reaction without being consumed D. has no E. ffect on the reaction rate 相关知识点: 试题来源: 解析 C。原因:“A catalyst is a substance that increases the rat...
apeople come from 正在翻译,请等待...[translate] aMenneking 开始[translate] aa catalyst is a substance that increases the rate of a chemical reaction without itself being used up 催化剂是增加一个化学反应的率,不用用完的本身的物质[translate]...
A: 1. Russian is the first language of about 150 million inhabitants of the formerSoviet Union. 2. Russian is a language belonging to the West Slavic subgroup of the Indo-European language family. B: 1. A catalyst is a substance which increases the rate of a chemical reaction. 2. Catal...
The term 'catalyst' is used to describe a substance that ___ in a chemical reaction. A. increases the rate B. decreases the rate C. changes the products D. is consumed completely 相关知识点: 试题来源: 解析 A。催化剂(catalyst)的作用是提高化学反应的速率,而自身在反应前后质量和化学性质不...
Which of the following is the correct term for a substance that undergoes a chemical change in a reaction? A. Reactant B. Product C. Catalyst D. Solvent 相关知识点: 试题来源: 解析 A。本题考查化学术语。“Reactant”指反应物,是在化学反应中发生变化的物质。“Product”是产物,是化学反应生成...
A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the reaction. A catalyst works by providing a different pathway for the reaction, one that has a lower activation energy than the uncatalyzed pathway. What are the three major roles of proteins?
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For a chemical reaction to occur, the reactants have to meet threshold energy called the activation energy.A catalyst is a substance that speeds up... Learn more about this topic: Catalyst | Definition, Types & Function from Chapter 12/ Lesson 6 ...
A catalyst is by definition a substance that increases the rate of approach to equilibrium of a chemical reaction in the reaction.A.without being substantially consumedB.not at all comsumedC.with decreasing significantlyD.with the change of it ’ s compo