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 rate of a reaction without being consumed in the process.”。 反馈 收藏 ...
Ray posits that this miracle is an object lesson for the disciples. 雷把这个奇事当作教训信徒们的事件。 来自互联网 9catalyst n.催化剂,造成变化的人或事 参考例句: A catalyst is a substance which speeds up a chemical reaction.催化剂是一种能加速化学反应的物质。 The workers'demand for better con...
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...
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]...
11 Which statement describes a catalyst? D A a substance that decreases the rate of a chemical reaction and is not changed by the reaction B a substance that decreases the rate of a chemical reaction and is changed by the reaction C a substance that increases the rate of a chemical reactio...
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 alters the rate of a reaction without taking any part in the reaction. There are two types of catalysts, positive...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our e...
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
a base is a substance that neutralizes an acid. a base which is soluble in water is called an alkali.碱就是能中和酸的物质。注意base 和 alkali 的区别。另一种定义: a bronsted-lowry acid is a proton donor.酸就是能提供氢离子(即质子)的物质。 a bronsted-lowry base is a proton acceptor....
12 Which statement describes a catalyst? D A a substance that decreases the rate of a chemical reaction and is not changed by the reaction B a substance that decreases the rate of a chemical reaction and is changed by the reaction C a substance that increases the rate of a chemical reactio...