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103年 - 103 高雄醫學大學_學生轉系考試:普通化學#86804
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9. A 0.050 M solution of the salt NaB has a pH of 9.00. The [OH
-
] of a 0.010 M solution of HB is thus __________M.
(A)4.6 × 10
-11
(B) 4.5 × 10
-6
(C)3.0 × 10
-9
(D) 2.2 × 10
-4
(E)2.2 × 10
-5
答案:
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統計:
A(3), B(0), C(0), D(0), E(0) #2344812
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2026/03/13
私人筆記#7884216
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10. An excited hydrogen atom with an electron in the n = 5 state emits light having a frequency of 6.90 × 1014 s-1 . The principal quantum level for the final state in this electronic transition is calculated to be___________ . (A) 5(B) 4(C)3(D) 2 (E)1 2
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