PreparED Study Materials
CHEM 100: Everyday Chemistry With Lab
School: Portland Community College
Number of Notes and Study Guides Available: 4
Notes
Study Guides
Videos
Calculating Vapor Pressure & Its Lowering: Urea in Water at 35°C
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the intriguing process of determining the vapor pressure of a urea-water solution at 35°C. Using Raoult's law we'll calculate the mole fraction of water and urea leading to the solution's vapor pressure. Learn how the solution's composition affects vapor-pressure lowering
Heat Absorption: Lead Weight's Final Temperature
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the process of heat absorption and discover how to calculate the final temperature of a lead fishing weight after absorbing a specific amount of heat.
Calculating Silver Density from Weight and Water Displacement
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Learn how to find the density of silver using weight and water displacement. A step-by-step guide to a common laboratory technique.
Glassware Drying with Acetone: The Science Behind It
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This discussion delves into the use of acetone as a solvent for removing water from laboratory glassware, exploring the science behind its effectiveness and the role of hydrogen bonding in facilitating rapid evaporation.
Determining Formula Mass: Step-by-Step Approach Using Atomic Masses
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the method to determine the formula mass for various compounds. Learn about the importance of atomic masses and their role in compounds like Aluminium sulfate, Diphosphorus Trioxide, and more. Understand the step-by-step approach to accurately calculate molecular weights.
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.


