阿摩：不管風從哪個方向吹來，只要懂得如何運用，懂得如何操縱帆船，就能運用風向到達目的地
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【全部】 - 學士後西醫物理及化學2024~2020難度:(41~50)
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1(A).
X


30. Which compound yields the largest van’t Hoff factor (i) when dissolved in water?
(A) NaCl
(B) MgCl2
(C) MgSO4
(D) FeCl3
(E) Glucose



2(A).
X


61. Which is an incorrect statement for heat capacity of ideal gases?
(A) Cv is identical for monatomic ideal gases
(B) Molecular motion of monatomic ideal gas is zero
(C) Cv of polyatomic ideal gas is larger than Cv of monatomic ideal gas
(D) Cp ＞ Cv in all ideal gases
(E) Cp = 5eead26fe9f2b.jpg R for monatomic ideal gas





3(A).
X


80. Using the data below, calculate the normal boiling point of liquid Br2 at 1 atm. For the process, Br2(l) → Br2(g): ΔH° = 31.0 kJ mol−1 and ΔS° = 93.0 JK−1 mol−1
(A) 300 K
(B) 0.33 K
(C) 0.30 K
(D) 333 K
(E) 433 K



4(A).
X


8. A conducting sphere is charged up such that the potential on its surface is 100 V (relative to infinity). If the sphere's radius were twice as large, but the charge on the sphere were the same, what would be the potential on the surface relative to infinity?
(A) 25 V
(B) 50 V
(C) 100 V
(D) 200 V
(E) 400 V



5(A).
X


8. A tube with three openings has three different cross-sectional areas (A1:A2:A3 = 2:1:3), as shown in the figure. The pressure difference is 25 Pa between A1 and A2. If v1 = 0.125 (m/s), find the density of the fluid (kg/m3 ).
6110893b35a2a.jpg
(A) 561
(B) 982
(C) 1067
(D) 1534
(E) 1698



6(A).
X


15. An energy of 13.6 eV is needed to ionize an electron from the ground state of a hydrogen atom. What is the longest photon wavelength needed to accomplishes this task? (Plank constant = 61108a8ddfbfc.jpg)
(A) 60 nm
(B) 70 nm
(C) 80 nm
(D) 90 nm
(E) 100 nm



7(A).

46. A hydraulic jack with two pistons is shown in the figure. The radii are 10 cm and 5 cm, and the weights are 40 kg and 1 kg for the left and right piston, respectively. A ball weighs 9 kg is placed on the right piston. Find the height difference between two pistons in equilibrium status. (Gravitational acceleration g = 10 m/s2 )
61108f2bb4702.jpg
(A) 0 cm
(B) 10 cm
(C) 1 m
(D) 10 m
(E) 20 m



8(A).
X


49. A block (m1) with a weight of 10 kg was placed on a wooden bar with a weight of 2 kg. The left end of the bar was attached firmly to a triangle. How much force (F) does it take to keep the system in horizontal equilibrium? (Gravitational acceleration g = 10 m/s2 )
   61108f8db9273.jpg
(A) 165 N
(B) 224 N
(C) 283 N
(D) 318 N
(E) 361 N



9(A).
X


85. Hydroxylamine nitrate contains 29.17 mass % N, 4.20 mass % H, and 66.63 mass % O. Determine its empirical formula.
(A) HNO
(B) H2NO2
(C) 6110985b63f4e.jpg
(D) 6110987e578ae.jpg
(E) H2NO3



10(A).

90. The students used salicylic acid and acetic anhydride to synthesize aspirin in the experiment of “The Preparation of Aspirin”. The chemical reaction is shown as below: Which compound will react with FeCl3 to become a purple complex?
(A) Salicylic acid
(B) Acetic anhydride
(C) Aspirin
(D) Acetic acid
(E) 18 M sulfuric acid



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惠利剛剛做了阿摩測驗，考了20分