PreparED Study Materials
CHEM 143: Org CHEM Structure
School: University of California - Santa Cruz
Number of Notes and Study Guides Available: 0
Videos
Density Explained: Calculating the Density of an Osmium Cube
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this tutorial, we break down the principle of density, illustrating it as a measure of mass per unit volume. Using an osmium cube as a practical example, we walk viewers through the steps of computing its density, demonstrating the interplay between mass, volume, and particle arrangement.
Vaporization vs. Condensation: Heat Dynamics in Phase Transitions
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Unravel the science behind endothermic and exothermic processes by studying vaporization and condensation. Grasp the molecular changes involved and understand the role of heat in these transformations. A comprehensive look into why vaporization requires heat, while condensation releases it.
Calculating [H?] in HNO? Solution Halfway to Equivalence with KOH
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Unraveling HNO? Titration: Calculating [H?] Halfway with KOH. Harness the Henderson-Hasselbalch equation for pH determination. Discover the pH at midpoint between weak acid and strong base titration.
Strong vs. Weak Acids: Ionization Differences in Water
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Uncover the distinct behaviors of hydrochloric acid and acetic acid in water. Learn about the complete ionization of strong acids and the partial ionization of weak ones, emphasizing the differentiation in proton donation.
Lattice Energy: Always Positive; Hydration Energy: Always Negative
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video we clarify why lattice energy in solids is always a positive value due to the energy needed to separate ions making it an endothermic process. On the flip side hydration energy is always negative as it releases heat when ions dissolve in water making it an exothermic reaction. We use sodium chloride as a real-world example to illustrate these crucial thermodynamic concepts
Perfecting Perbromate Ion: Achieving Zero Formal Charges
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Learn how to create a Lewis structure for the perbromate ion, ensuring all atoms achieve zero formal charges. Follow the step-by-step guide to understand the bonding and electron distribution in this chemical compound.








