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【简答题】
选词填空。 stand for in favor of hold the attention of consist of be likely to as soon as possible make...attractive stand out as long as most of 1. you be in London this year? 2.I bought a lot of books yesterday, which are in English. 3.Most people are familiar with the idea that all matters atoms. 4.I will cooperate I am notified on time. 5.We should plant more trees to our hometown more . 6.You should finish your work . 7.Jessica as a track star. 8.The letters PLA the People's Liberation Army. 9.They were the Democratic candidate for President. 10.The little boy from Xinjiang the audience in the competition.
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皮皮学刷刷变学霸
举一反三
【单选题】某化学反应,温度升高 1K ,反应的速率系数增加 1% ,则该反应的活化能的数值约( )。
A.
100 RT 2
B.
10 RT 2
C.
RT 2
D.
0.01 RT 2
【单选题】某化学反应的活化能Ea=90kJ/mol,在300K时发生反应,温度每升高1K,速率系数k增加的百分数为
A.
12.0%
B.
12.8%
C.
8.31%
D.
30%
【单选题】某化学反应的活化能为90kJ·mol -1 ，在300K时发生反应，温度每升高1K，速率系数k增加的百分数为( )。
A.
12.0%
B.
12.8%
C.
8.31%
D.
30%
【简答题】某一化学反应，当温度由300K升高到310K时，反应速率增大了一倍，该反应的活化能为 kJ·mol-1。（计算结果保留3位有效数字）