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• 9. Calculate the molality of C2H5OH in a water solution that is prepared by mixing 50.0 mL of C2H5OH
• 10. Which statement about N2 is false?(A) It is a gas at room temperature.(B) The oxidation state is
• 11. Which of these statements about benzene is true?(A) All carbon atoms in benzene are sp3 hybridiz
• 12. When electrons in a molecule are not found between a pair of atoms but move throughout themolecu
• 3. How many oxygen atoms are there in one formula unit of Ca3(PO4)2?(A)2(B)4 (C)6(D)8 (E) none of th
• 13. Which one of the following descriptions for microelectrodes is incorrect?(A) The dimensions of s
• 5. Which of the species below, when dissolved in H2O, will not produce a basic solution?(A) SO2 (B)
• 14. Which one of the following descriptions about GC (gas chromatography) is correct?(A) In GC, the
• 15. Which one of the following detectors is not used for HPLC (high-performance liquidchromatography
• 17. The pH meter is widely used for measuring the H+concentrations in the solutions. Which one ofthe
• 16. Which one of the following descriptions about CE (capillary electrophoresis) is incorrect?(A) El
• 18. Atomic spectrometer is widely applied for the analysis of various elements. Which one of thefoll
• 19. A method of separation that employs a system with two phases of matter, a mobile phase and astat
• 20. A solution is also called a               .(A) homogeneous mixture (B) heterogeneous mixture(C)
• 21. Which one of the following descriptions for the Beer’s law is incorrect?(A) Beer’s law is ordina
• 12. Willy: What happened to you? You look terrible.Sam: I woke up so late that I missed the bus. Tha
• 【題組】43. When the writer went back to see the river, what did she find?(A) The pollution in the river
• 22. Buffer solutions are very important for many analytical applications. Which one of the following
• 23. Which one of the following apparatuses is not used for measurement of volume?(A) Volumetric (B)
• 13. Ben: Dad, that toy car looks great. Can I have one?Dad: How much is it?Ben: It costs $1000.Dad:
• 15. John: Who is the girl you talked to just now? William: You mean the one ______ is wearing red?(A
• 17. A:Hey, did you see the boy and the dog _____ were taking a walk by the pond? B: Not at all.(A)　
• 20. Which of the following sentences is TRUE?(A) Bill bought the house where his family used to live
• My best friend is Kate. We 　21 each other since we were in elementary school. Although we come from
• 14. I grew up _____ to Michael’s songs. His songs are really touching. (A) listen (B) to listen (C)