Chem 220 - Study guides, Class notes & Summaries

1. The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following, a more efficient centrifugal compressor operation results from Answer: Lowering the condensing pressure 2. The heat removed from the refrigerant in a condenser is Answer: Sensible and Latent Heat 3. The refrigerant unit that you have been assigned to is being taken out of service for a major repair. You have been assigned to withdraw refrigerant for storage in suitable containers. Accord...

CHEM 102 WINTER 16 PRACTICE FINAL EXAM (C) KEY 1. What is true about cytosine? Choose ALL true statements. A. All of the nitrogen atoms are sp3 hybridized. B. The bond angle around all carbon atoms are around 120°. C. Cytosine can potentially make up to 8 hydrogen bonds. D. All of the carbon atoms are sp2 hybridized. E. There are a total of 3 pi bonds in this molecule. 2. Rank the following diatomic molecules/ions in terms of decreasing stability. Please choose a SINGLE answ...

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1. What does OSHA stand for? Occupational Safety and Health Administration 2. was created by the US department of labor to regulate and enforce safety and health standards to protect employees in the work place... 3. This regulates employee exposure to potentially toxic substances and inform employees about the possible hazards of materials used in the work place? 4. This requires that chemical manufacturers and im- porters assess and communicate the potential haz- ards associated with their ...

Lab Flow - Chem 1A, questions and answers, 100% accurate answers It is often helpful to remember the acronym PASS when using a fire extinguisher. Fill in the word that corresponds with each letter to complete the steps needed for operation of this device. P: Pull the pin. A: Aim the nozzle at the base of the fire. S: Squeeze the lever slowly. S: Sweep the spray from side to side over the fire. Identify the safety equipment designed to deal with each emergency listed. 1. cuts or mino...

1. How many electrons can an s subshell hold? 2 2. How many electrons can a p subshell hold? 6 3. How many electrons can a d subshell hold? 10 4. Which subshells are available in the first energy level? 5. Which subshells are available in the second en- ergy level? 6. Which subshells are available in the third energy level? s s and p s, p and d 7. What is Hund's rule? (Think bus seats!) Every orbital in a sub- shell must be singly filled with an electron before any one orbital can be d...

This study guide covers the mechanisms and steps involved in several chemical reactions, including hydrohalogenation, acid-catalyzed hydration, oxymercuration-reduction, hydroboration-oxidation, hydrohalogenation by free radical chain reaction, dehalogenation, halohydrin formation, hydrogenation, ozonolysis, and halogenation. Each reaction is described through a series of numbered steps, detailing the formation of new bonds, the movement of electrons, and the addition or removal of functional gr...

1. Anthropogenic derived from human activities 2. Erosion The process by which wind, water, ice, or gravity transports soil and sediment from one location to another 3. Runoff Part of the water cycle where an excess of water runs down and does not sink into the soil and eventually makes it to the rivers, lakes, and oceans. 4. Denitrification process in which fixed nitrogen compounds are con- verted back into nitrogen gas and returned to the atmosphere 5. Nitrification ammonia (NH3) is conv...

This study guide summarizes the key aspects of alkene addition reactions, including the reagents used, the regioselectivity (Markovnikov or anti-Markovnikov), and the products formed. The guide provides a concise summary of the reactions, with a focus on the functional groups added to the alkene and the stereochemistry of the addition. The reactions covered include hydrohalogenation, acid-catalyzed hydration, oxymercuration-reduction, hydroboration-oxidation, hydrohalogenation by free radicals, ...

CHEM 220 EXAM #3 WITH COMPLETE SOLUTIONS 100%2023/2024