1. The sedative Demerol hydrochloride has the formula \( \mathrm{C}_{15} \mathrm{H}_{22} \mathrm{CINO} \). What is the molar mass of this compound? 1 mole Demerol hydrochloride \( =283.8 \mathrm{~g} \) 1 mole Demerol hydrochloride \( =232.8 \mathrm{~g} \) 1 mole Demerol hydrochloride \( =382.8 \mathrm{~g} \) 1 mole Demerol hydrochloride \( =267.8 \mathrm{~g} \)

Which is the correct Lewis structure for acetylene (\(C_ { 2} H_ { 2} \))?

What does word root indicate in IUPAC name? b. Write the suffix for doubly bonded \( (\mathrm{C}=\mathrm{C}) \) alcohol. c. Ifsame substituent is repeated thrice, which prefix is added to word root? \& Write IUPAC name of \( \mathrm{CH}_{3}-\mathrm{CH}(\mathrm{CI})-\mathrm{CH}_{2}-\mathrm{COOH} \). e. Which group is selected as suffix if -OH and -CHO both are present in the compound?

57. Rappresenta le equazioni delle seguenti reazioni specificando il nome dei prodotti. \( \begin{array}{ll}\text { a) ossidazione dell'esano } & \text { c) dibromurazione dell'esano } \\ \text { b) monoclorurazione del butano } & \text { d) ossidazione del propano }\end{array} \)

5 What is meant by the term hygroscopic when referring to brake fluid?

3. จงอ่านชื่อของสารประกอบต่อไปนี้ 3.1 Bas