[化學] 成大96年化學考古的疑問
今天寫了96年生科系的化學考卷,有幾題不太會,希望有高手能指點一下.
1. The value of Kp for the reaction H2 + O2 ---> H2O2 is 2.3*10^6 at 600K.
Determine value for K for this reaction at 600K
(A)4.7*10^4 (B)2.3*10^6 (C)1.13*10^8 (D)4.35*10^7 (E)4.35*10^8
板上的參考答案是C 這提無從下手..
2. You take 325g of a solid(melting point=58度C,heat of fusion=345 J/g)and
let it melt in 755g of water.The water temperature decrease from its
initial temperature to 30度C.Calculate the initial temperature od the water
這題答案是100度C 不知道怎麼算的....
3. Which of the following metals has the highest melting point?
(A)Na (B)Mg (C)Al (D)Ca (E)K
答案是C 這不是要看分子量誰比較大嗎? 這樣的話應該是D阿?
後來還發現一題問題了......
4. The color of RS-Hb and O2-Hb are green and red,respectively.
Which absorbs higher frequency of electromagnetic radiation?
這題答案是RS-Hb 但是O2-Hb 呈現綠色 不是代表他是吸收紅光的嗎? 紅光波長大
頻率不是比較高嗎?
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※ 編輯: siccreater 來自: 118.168.67.126 (05/30 00:08)
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