(c)What happens to the speed of the reaction when(i) smaller pieces of zinc are used?goes faster /more hydrogen given off per minute /more gas given off per unit time /less time for same amount of gas...I per unit time / less time for same amount of gas_.. [1](ii) some ...
The speed of the reaction will increase ___ more catalyst is added. A. if B. when C. while D. although 相关知识点: 试题来源: 解析 A。本题考查连词的用法。“if”表示“如果”,引导条件状语从句;“when”表示“当...时候”;“while”强调动作同时进行;“although”表示“尽管”。这里表示“如果...
When designing an experiment to observe the reaction speed of different metals with acid, what should be kept the same? A. The type of acid and the size of the metal pieces. B. The type of acid and the concentration of the acid. C. The size of the metal pieces and the concentration...
myreaction. Thenextmoment,therewerealotoffootstepscomingfromthedarkandIcouldhearsomeone callingmyname.Tomysurprise,afewsecondslatermyparentsappearedtogetherwithafewpeople whoweremyneighbors. 注意: 1.续写词数应为150左右; 2.续写部分分为两段,每段的开头已为你写好,不计入总词数。 Paragraph1: Theyounglady...
When studying the influence of temperature on the speed of a chemical reaction, what is the variable? A. The type of chemical B. The amount of catalyst C. The temperature D. The time taken 相关知识点: 试题来源: 解析 C。此题为变量的判断。在研究温度对化学反应速度的影响实验中,温度是变量...
Markhamalsohasamuchlowerrateofobesitythan otherCanadiancities.Now,it?sworkingtowardsanothergoal— 100%recyclingofunwantedtextiles. 8.Whatdoestheunderlinedword“one”inParagraph 1referto? A.Ashirt. B.Acity. C.Ahome. D.Acloset. 9.Whatdothevolunteersdowiththeunwantedclothing? A.Sellthemingoodcondition. ...
Ki-Woo becomes more animated at Ki-Tek’s exaggerated reaction. He opens his arms wide and looks around at the living room. KI-WOO Imagine for a second that this is our house. Let’s say we live here. Which room would you like to have? Out of all the beautiful rooms designed by...
【2】Why does the author describe Andrew Chen's experience in the textA.To show how the coronavirus affected students' lives.B.To explain what worried students most when schools closed.C.To illustrate the appropriate reaction to the closure of school.D.To present the different views of ...
When Sol was criticized by his new employer for not having made a sale, Sol's reaction was to feel sorry for himself. “I had put everything I had into making that sale,” Sol says. “And I felt that I had failed as a person. I had to learn through experience not to react pke...
With what minimum reaction time will the car not hit the stopped truck when this car runs at speed of 120 km/h and driver sees the stopped truck at distance of 200 meters far. The grade of roadway is zero and the coefficient of forward friction is . What will happen if the distance ...