PreparED Study Materials
CHEM 122: General Chemistry I Lecture
School: University of Illinois at Chicago
Number of Notes and Study Guides Available: 55
Notes
Study Guides
Videos
Glucose Polymer with Alternating Glycosidic Linkages: Structure and Fu
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the fascinating discovery of a glucose polymer with alternating glycosidic linkages. We'll visualize its Haworth projection and investigate its potential role in organisms, pondering whether it primarily serves a structural or energy storage function. Additionally, we'll discuss which types of organisms might utilize this unique polysaccharide as a potential food source.
Unveiling the Water-to-Salt Ratio in Barium Chloride Hydrate
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the process of determining the number of water molecules in a barium chloride hydrate. Through a reaction with sulfuric acid, the video highlights how to derive the formation of barium sulfate and its mass calculations. A comprehensive chemical analysis leads to finding the elusive 'x' value, revealing the water-to-salt ratio.
1828 Synthesis of Urea: Pioneering Steps in Biochemistry
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the groundbreaking moment in 1828 when Wöhler synthesized urea, the first organic compound. Join us in this video as we trace the profound impact of this achievement on the field of biochemistry and its significance in unraveling the mysteries of life's complex chemistry.
The Wobble Concept: Explaining Codon Variability in Amino Acid Encodin
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Join us as we delve into the intriguing world of genetic coding and discover how the concept of wobble accounts for variations in codons encoding a single amino acid.
Evolutionary Implications of Cytochromes vs. Hemoglobin and Myoglobin
Want To Learn More? To watch the entire video and ALL of the videos in the series:
In this video, we delve into the fascinating world of evolutionary adaptations in heme-containing proteins.
Calculate a Building's Age Using Nickel-63 Decay
Want To Learn More? To watch the entire video and ALL of the videos in the series:
The scenario involves an archaeologist analyzing iron in an old building containing nickel-63, which has a known half-life of 92 years. With only 0.78% of the original nickel-63 remaining, the goal is to estimate the year when this discovery was made. We delve into the calculations and principles of first-order decay reactions.