92年 16.Which designation has the largest number of atomic orbitals? (A)n=3 (B)7f (C)n=6,l=5 (D)n=7,l=3.ml=-3 (A)有9个轨域 (B)7个 (C)11个 (D)1个轨域 为什麽答案不是(C) 而是(B) 93年 2.Consider the aqueous solutions containing 0.1M of the following substances, which of them would have good conductivity? (A)CH3NH2 (B)CH3COOH (C)HCIO4 (D)Ca(OH)2 (E)NH4Br 5.Four identical 1.0L flasks containing H2, CH4,NH3, and O2,respectively,each at 25度C and 1atm pressure,which of the following statement is correct? (A)the molecules of H2 have the hightest average velocity (B)CH4 and NH3 have the closest values of PV/RT <C>all four gase have the same average kinetic energy <D>all four gase have the same number of molecules <E>O2 strays away most from the ideal gase behavior among the four (B)应该是错的(D)应该是对 7.When an exothermic reaction is carried out in a calorimeter,which of the following statement is correct? <A>q(H2O) < 0 <B)ΣH(products) < ΣH(reactants) <C>the temperature of water decreases <D>ΔH(reaction) < 0 <E>the reaction takes place spontaneously (B)(D)应该对 8.Considering the atomic structure of hydrogen, which of the following staement is correct? <A>3s and 3p are equal in energy <B>3s and 3p do not exist <C>transition between n=3 and 4 absorbs visible light <D>n=0 is not allowed <E>UV light can ionize the election 主要想问(C)和(E) 13.Ozonecanabosrb ultraviolet light to decompose to oxygen. The rare law for this reaction has been determined as Rate=K[O3]2 / [O2] <a)Derive a mechanism that explains this rate law. (b)Write the stoichiometric equation(剂量式) for this reaction. (c)Draw an energy profile for this reaction and specify the activation energy in the profile. (d)NO is a free radical. Explain why NO can accelerate the ozone depletion? 这题我不太懂题目要问什麽 谢谢有耐心的善心好人看完我的问题 拜托会的人教我 不用全部回答也可以 91年的题目,我没有正确答案 能给我解答吗? 我想应该都是复选 谢谢唷~~ --

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