PreparED Study Materials
Notes
Study Guides
Videos
Vaporization vs. Condensation: Heat Absorption & Release
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover the contrasting processes of vaporization and condensation and their thermal nature. Understand why boiling is endothermic, absorbing heat, while condensation is exothermic, releasing heat, and how these processes impact ?H values.
Calculating Percent Composition: Using Molecular Formulas & Atomic Mas
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Understand the process of calculating percent composition using the molecular formula. Grasp the methodology with compounds like C2H4O2, CH2O2, and more. Discover how atomic masses influence the mass percent of elements in various compounds.
Determining Ionizable H Atoms in Malonic Acid via Neutralization
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the process of determining ionizable hydrogen atoms in malonic acid using its molecular formula C3H4O4 and a neutralization reaction with Sodium hydroxide. Through methodical calculations involving the given mass of malonic acid and the required volume of Sodium hydroxide for neutralization we uncover that each molecule of malonic acid contains two ionizable H atoms.
Drawing Lewis Structures for Potassium, Barium, Aluminum, and Bromine
Want To Learn More? To watch the entire video and ALL of the videos in the series:
We explore Lewis structures, which depict atom bonding and lone electron pairs. We create Lewis structures for potassium, barium, aluminum, and bromine by using group numbers in the periodic table to determine their valence electrons.
Barium Chloride & Sodium Sulfate: Calculating BaSO? Yield
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Dive into the chemical reaction between Barium Chloride and Sodium Sulfate. Through step-by-step calculations, discover how to determine the resultant mass of Barium Sulfate. Conclude with a real-world example, highlighting the precise amount formed.
Analyzing Molecular Structure Levels in DNA, tRNA, and mRNA
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video explores the concept of structural levels (primary, secondary, tertiary, and quaternary) in biomolecules, focusing on double-stranded DNA, tRNA, and mRNA to understand the diverse ways these molecules exhibit these structural layers.