作者NCUEKLKL (鸟实验室~硍)
看板Chemistry
标题pH 值问题
时间Thu Feb 9 10:41:41 2006
by what factor is the [H^+] of a solution lowered
if the pH changes from 10.4 to 7.4 ?
A 100
B 30
C 3
D -3
E 1000
答案是E吗
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