PreparED Study Materials
CHEM 208: General Chemistry 1
School: University of Louisville
Number of Notes and Study Guides Available: 1
Notes
Videos
Weight% of Ba, K, Cl in Heated BaCl2·2H2O & KCl Mix
Want To Learn More? To watch the entire video and ALL of the videos in the series:
In this video we explore the process of calculating the weight percent of barium potassium and chlorine in a mixed sample of barium chloride dihydrate and potassium chloride. Through a step-by-step approach we examine the changes in sample weight after heating to 160°C breaking down the calculations for each elemental content.
Ethylene Glycol & Freezing Point in Antifreeze
Want To Learn More? To watch the entire video and ALL of the videos in the series:
We explore the impact of increasing the concentration of ethylene glycol in an antifreeze mixture, explaining the resulting effect on the freezing point of the solution by examining its interaction with water molecules.
Why Fluorine Can't Form FH? or FCl?: Unpacking VSEPR Theory & Electron
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore why fluorine, with its seven valence electrons, doesn't form compounds like FH? or FCl?. Understand the role of VSEPR theory, atomic size, and electronegativity in limiting bond formation. Grasp the interplay of geometric challenges and electron repulsion in compound stability.
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:
Learn how to find the density of silver using weight and water displacement. A step-by-step guide to a common laboratory technique.
Why is Chloromethane Polar but Methane Nonpolar? Decoding Molecule Sha
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the polar nature of Chloromethane and the nonpolar characteristics of Methane. Understand the impact of electronegativity differences and bond types. Deciphering molecular polarity through the lens of tetrahedral structures.
Molecule Count in 0.334 g of C?H?: Ethane Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This instructional video guides you through the process of determining the number of molecules in a given sample. It illustrates the conversion from grams to moles using the molar mass of the substance and then to molecules using Avogadro's number, providing a practical example with ethane (C?H?) to calculate approximately 6.67 x 10²¹ molecules in a 0.334 g sample.