82. Danny is being careful in handling acids in the laboratory. In diluting acids, she puts the distilled water first before finally adding the acid. This is so because she is dealing with what type of chemical? A. Reactive chemical B. Carcinogenic chemical C. Combustible chemical D. Corrosive chemical 83. Heptane, isopropanol, and methanol must be labelled with flash point below 37.8°C (100°F), this is so because these chemicals are classified as? A. Reactive chemical . B. Carcinogenic chemical C. Combustible chemical D. Corrosive chemical 84. Which among the following use of fire extinguisher is/are correctly paired? I. Pressurized water extinguishers: for combustible petroleum products II. Halogenated hydrocarbon extinguishers: for magnesium or sodium caused fire III. Dry-chemical and carbon dioxide extinguishers: for energized electrical equipment IV. M28 dry powder fire extinguishers: for combustible metals A. I and II only B. II and III only C. III and IV only D. II and III only

82. Danny is being careful in handling acids in the laboratory. In diluting acids, she puts the distilled water first before finally adding the acid. This is so because she is dealing with what type of chemical? A. Reactive chemical B. Carcinogenic chemical C. Combustible chemical D. Corrosive chemical 83. Heptane, isopropanol, and methanol must be labelled with flash point below 37.8°C (100°F), this is so because these chemicals are classified as? A. Reactive chemical . B. Carcinogenic chemical C. Combustible chemical D. Corrosive chemical 84. Which among the following use of fire extinguisher is/are correctly paired? I. Pressurized water extinguishers: for combustible petroleum products II. Halogenated hydrocarbon extinguishers: for magnesium or sodium caused fire III. Dry-chemical and carbon dioxide extinguishers: for energized electrical equipment IV. M28 dry powder fire extinguishers: for combustible metals A. I and II only B. II and III only C. III and IV only D. II and III only

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter21: Organic And Biological Molecules

Section: Chapter Questions

Problem 156CP: Alcohols are very useful starting materials for the production of many different compounds. The...

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Alcohols are very useful starting materials for the production of many different compounds. The following conversions, starting with 1-butanol, can be carried out in two or more steps. Show the steps (reactants/catalysts) you would follow to carry out the conversions, drawing the formula for the organic product in each step. For each step, a major product must be produced. (See Exercise 62.) (Hint: In the presence of H+, an alcohol is converted into an alkene and water. This is the exact reverse of the reaction of adding water to an alkene to form an alcohol.) a. 1-butanol butane b. 1-butanol 2-butanone
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