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...
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...
arms races, food security, terrorism, cyber-attacks, climate change, energy crises, major infectious diseases, and artificial intelligence problems, poses a grave threat to the beautiful planet on which all humans
A substance which itself is not a catalyst but……….. .the reactivity of a catalyst is called a promoter and the one which reduces the activity is called………fo
Soaking the base substance where the catalyst bed was formed onPROBLEM TO BE SOLVED: To provide a method for depositing an electroless zinc oxide film which has high light transmissivity and low sheet resistance value, and can thickly be deposited.西條 義司...
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...
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
c.A drug, chemical, or other material (such as glue) that one is dependent on or uses habitually and that is often illegal or subject to government regulation:Which substance was he abusing? 2.The most important part or idea of what is said or written; the essence or gist:the substance...
of chemistry.a chemical reaction.químico noun a substance used in or obtained by a chemical process.Some chemicals give off harmful fumes.producto químico ˈchemistnoun 1.a scientist who studies or works in chemistry.an industrial chemist.químico ...
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