1. 生理食鹽水是一種常用的靜脈注射液，是 NaCl 溶於水中的均勻混合物。在該混合物中，NaCl 所佔的重量百分比為 0.89％。在 450 毫升生理食鹽水中有幾公克的 NaCl?(生理食鹽水的密度
2. Which of the following pairs is incorrect?(A)NaNO2, sodium nitrite(B)K2Cr2O7, potassium chromate(
3. Which one of the following statements is incorrect?(A)Lead(IV) carbonate has its formulas of Pb(C
5. Which one of the following statements is incorrect?(A)At constant temperature, the lighter the ga
6. A 12.6-g sample of acetylene (C2H2) produced a temperature increase of 16.9℃ in a bomb calorimete
8. The decomposition of ethanol (C2H5OH) on an alumina (Al2O3) surface, C2H5OH(g) → C2H4(g) + H2O(g)
9. For the reaction PCl5(g) PCl3(g) + Cl2(g) at 327℃, the equilibrium constant, Kp, is 11.5. Suppose
11. The pH of a 0.05 M solution of trichloroacetic acid (CCl3CO2H), a corrosive acid used to precipi
12. Which of the following statements is correct?(A)Carbon has electron affinity more favorable (exo
14. LiI(s) has a heat of formation of -292 kJ/mol and a lattice energy of -753 kJ/mol. The ionizatio
15. Which of the following statements is correct?(A)In HF, its bonding molecular orbital has greater
16. Which of the following statements is correct?(A)HBr has boiling point higher than Kr and Cl2(B)H
18. You have 75.0 mL of 0.10 M HA. After adding 30.0 mL of 0.10 M NaOH, the pH of the HA-NaOH soluti
2. 軟錳礦(pyrolusite)是由 Mn 和 O 組成的化合物。如果軟錳礦的質量中 63%是來自於錳，下列哪一項是軟錳礦的實驗式？(A) Mn2O (B) MnO (C) Mn2O3 (D) M
3. 使用奧斯特華德法製造硝酸，第一個步驟為 4NH3(g) + 5O2(g) ―→ 4NO(g) +6H2O(g)。如果 150 g 的氨與 150 g 的氧氣反應，產生 87 g 的一氧化氮，此反
4. 在下列化學反應中，哪一個化合物是氧化劑?6KNO3 + 5S + 2CaCO3 →3K2SO4 + 2CaSO4 + 2CO2 + 3N2(A) KNO3 (B) S (C) CaCO3 (D)