59. The positively polarized carbon atom of a carbonyl group acts as ________.
(A)an electrophile and a Lewis base
(B)a nucleophile and a Lewis base
(C)an electrophile and a Lewis acid
(D)a nucleophile and a Lewis acid

1. A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 4.71 g/mL, 4.73 g/mL, 4.67 g/mL, 4.69 g/mL. If the actual value for the density of the sugar solution is 4.40 g/mL, which statement below best describes her results? (A)Her results are precise, but not accurate. (B)Her results are accurate, but not precise. (C)Her results are both precise and accurate. (D)Her results are neither precise nor accurate.

2. What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41) / 63.498 (A)4.6 (B)4.57 (C)4.573 (D)4.5728

3. Write the name for Ca3(PO4)2. (A)calcium (III) phosphite (B)calcium (II) phosphite (C)calcium phosphate (D)tricalcium phosphorustetraoxide

4. Give the correct formula for aluminum sulfate. (A)Al2SO4 (B)Al(SO4)3 (C)Al3(SO4)2 (D)Al2(SO4)3

5. Determine the empirical formula for a compound that contains C, H and O. It contains 51.59% C and 35.30% O by mass. (C: 12.0 g/mol； H: 1.00 g/mol； O:6.0 g/mol) (A)C2H6O (B)CHO (C)C4H13O2 (D)CH4O3

6. Give the theoretical yield, in grams, of CO2 from the reaction of 4.000 moles of with 4.000 moles of O2. (C: 12.0 g/mol； H: 1.00 g/mol； O: 16.0 g/mol) 2  + 25 O2 → 16 CO2 + 18 H2O (A)112.7 g (B)102.4 g (C)176.0 g (D)704.0 g

7. The titration of 25.0 mL of an unknown concentration H2SO4 solution requires 83.6 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)? (A)0.20 M (B)0.40 M (C)0.10 M (D)0.36 M

8. How many subshells are there in the shell with n = 4? (A)3 (B)4 (C)6 (D)18

9. How many valence electrons does an atom of C have? (A)1 (B)4 (C)2 (D)3

10. Place the following in order of increasing radius.  (A) (B) (C) (D)

114年 - [無官方正解]114 亞洲大學_學士後獸醫學系招生試題：化學(含普通化學、有機化學)#131168

113年 - 113 中國醫藥大學_學士班寒假轉學招生考試：普通化學#124976

113年 - 113 亞洲大學_學士後獸醫學系招生考試試題：化學科#123227

112年 - 112 中國醫藥大學_學士班寒假轉學招生考試試題：普通化學#118600

112年 - 112 亞洲大學學士後獸醫學系招生考試試題_學士後獸醫學系：化學(含普通化學、有機化學)#117879

111年 - 111 中國醫藥大學學士班寒假轉學招生考試：普通化學#112961

111年 - 111 國立清華大學學士後西醫學系單獨招生考試_學士後醫學系自然科學組：化學#110532

111年 - 111 國立中興大學_學士後醫學系試題_學士後醫學系甲、乙組：化學#107632

111年 - 111 學士後醫學系招生考試：物理及化學#107629

110年 - 110 中國醫藥大學_學士班寒假轉學考試：普通化學#105829