PreparED Study Materials
CHEM 142: General Chemistry II
School: Emory University
Number of Notes and Study Guides Available: 3
Study Guides
Videos
Identify the 3' and 5' ends of the DNA segment AGTCAT
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video discusses the fundamental concept of DNA structure, focusing on the identification of the 3' and 5' ends of a DNA segment, specifically highlighting the sequence AGTCAT and its importance in understanding DNA strand direction for processes like replication and transcription.
Mole Fractions, Partial Pressures, and Total Pressure Calculation
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the calculations for mole fractions, partial pressures, and total pressure in a 22.4 dm³ vessel with H? and N? at 273.15 K.
Potassium and Iodine Monatomic Ions: Atomic Insights Revealed
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the monatomic ions formed by potassium and iodine in this informative chemistry tutorial. Learn how to determine ion charges based on atomic properties and their positions on the periodic table.
Why is it necessary that protein molecules be enormous?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This discussion explores the importance of the size of protein molecules, highlighting their three-dimensional structures, diverse functions, and the role of large size in enabling structural motifs, functional regions, and stability without revealing specific examples or findings.
Electronegativity & Acid Strength: Decoding Acid Formulas
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video discusses how the electronegativity of attached groups affects the strength of acids. Comparing pairs such as Chloroacetic vs Fluoroacetic and Acetic vs Nitroacetic acids, we highlight which is the stronger acid in each pair and why.
Structures & Classifications of C?H?? Alkyl Groups: From Primary to Te
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the diverse structures of C?H?? alkyl groups and classify them into primary, secondary, or tertiary categories. Through a visualization of carbon atom arrangements, uncover the nuances of n-pentyl, sec-pentyl, tert-pentyl, isopentyl, and neopentyl structures.


















