Chem 223 Study guides, Class notes & Summaries

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 ...

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...

Stock solvent-nucleophile medium (SNM) was prepared (NH​4B​ R/H​2S​ O​4)​ in order to observe reactions that occurs after the addition of a primary (1°) alcohol (1-butanol) and a tertiary (3°) alcohol (2-Methyl-2-butanol), respectively. Infrared (IR) Spectroscopy was used and recorded. Lab was done online, during COVID 19. All IR Spectra are still included, which are all correctly drawn =)

Chem 223 Pro Final Exam With Correct Solutions 2024.

NRP - Lessons 1-9 quizzes Answered 2022 Exam Pack/ NRP Lesson 1 Basic Principles 1. How many neonates need to be assessed for resuscitation?: 100% 2. How many neonates need resuscitation measures to begin breathing at birth?: 10% 3. Apnea that responds to stimm: Primary Apnea 4. Secondary apnea: does not respond to stimm 5. What are the initial 3 assessments you do in resuscitation for ALL new- borns?: Are they term? Are they crying? Do they have good tone? 6. What initial...

The melting point of 2 known compounds (​trans​-cinnamic acid & urea) were measured in order to observe changes that occur once they are mixed in a 1:1 ratio. Using similar methods, the melting point of an unknown compound was determined. To confirm the identity of the unknown solid, a 1:1 sample of the unknown and a reference sample. Experiment done in lab, before COVID-19.

An acid-base extraction was used to separate a binary mixture and the components of an unknown mixture was predicted. CHEM 223. Hunter College lab. Half the experiment was done in lab and the other half was done online, during COVID-19.

An unknown solid was purified, through recrystallization, in order to determine its identity. The mixed melting point technique was employed to confirm the identity of the pure solid, using given reference samples. All calculations, graphs, tables, and post lab questions are included. Experiment done in lab, before COVID-19.

4-methylcyclohexene was synthesized through dehydration of 4-methylcyclohexanol, in the presence of an acid catalyst. The obtained product was identified using various methods (e.g. Infrared (IR) Spectroscopy and chemical tests for unsaturation (bromination test & permanganate test)). Lab done online, during COVID-19. Still includes detailed tables and IR Spectra. All correct post lab questions.