作者asd789456123 (123)
看板TransBioChem
标题[化学] 99台联大A1 19
时间Fri Aug 6 17:20:37 2010
19.How many mmoles of HCL must be added to 100ml of a 0.10M solution of
methylamine(pKb=3.36)to give a buffer having a PH of 10?
(A)8.1 (B)18.7 (C)20.0 (D)41.5 (E)12.7
Ans:(A)8.1
20.Of energy, work, enthalpy, and heat, how many are stable functions?
(A)0 (B)1 (C)2 (D)3 (E)4
Ans:(C)2
请问是哪两个呢? 感激不尽
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