PreparED Study Materials
CHEM 103: General Chemistry I
School: Catholic University of America
Number of Notes and Study Guides Available: 0
Videos
Classifying Substances: From Pure Elements to Mixtures Explained
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Classify substances into various categories: element compound homogeneous mixture and heterogeneous mixture. This video breaks down the fundamental distinctions between pure substances and mixtures illustrating with real-world examples like urine pure water a Snickers™ bar and soil. A concise guide for understanding the essence of material classification in chemistry.
Calculate oxygen molar concentration in water at 25°C with a partial p
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video explores molar concentration (molarity) and demonstrates the calculation of oxygen's molar concentration in water at 25°C, considering a partial pressure of 0.22 atm by employing Henry's Law and the given Henry's Law constant for oxygen, revealing that under these conditions, there are 2.86 x 10?? moles of oxygen per liter of water, highlighting the significance of understanding these concepts for managing gas dissolution in liquids across varying circumstances.
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Understanding Average Speed in Kinetic Molecular Theory
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
The kinetic molecular theory of gases describes the random motion and speed distribution of gas molecules in a container, and when considering various statements about the average speeds of these molecules, it's important to understand how they behave under different conditions.
Balancing Equations: From Lead Sulfide to Ammonia Reactions
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video shows you how to balance equations from the reaction of lead(II) sulfide with hydrochloric acid to ammonia's interaction with oxygen. Understand the nuances of atom balancing and grasp the precise stoichiometric relationships.
Ionic vs. Molecular: Classifying Compounds & Metal Ion Varieties!
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the art of classifying compounds as ionic or molecular based on bonding. Unravel the nuances between ionic and covalent bonds using electronegativity differences as a guide. Classify CoCl2 CF4 BaSO4 and NO with in-depth explanations and predict their properties.



















