PreparED Study Materials
CHEM 121: Foundations of Chemistry I Lecture
School: Old Dominion University
Number of Notes and Study Guides Available: 10
Notes
Study Guides
Videos
Indium Secrets: Electron Config Magnetism & HCl Reaction
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This video breaks down the configurations for In In+ In2+ and In3+ distinguishing between diamagnetic and paramagnetic properties. Uncover the oxidation state of Indium in InCl2 and understand its diamagnetic nature.
Mass of Fluorine in 24.6g SnF? Toothpaste: A Breakdown
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Tin(II) Fluoride in Toothpaste: Dive into the chemistry of Tin(II) Fluoride commonly used in toothpaste to prevent tooth decay. Understand molar mass calculations stoichiometry and determine the fluoride content in a given compound
Chromium(III) Oxide Reaction: Calculating Precise Quantities
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Learn the art of precise chemical calculations in this video. Discover how Chromium(III) oxide reacts with hydrogen sulfide to form chromium(III) sulfide and water, all while unraveling the necessary steps to determine the exact quantities involved.
Molecular Formulas: Lewis Structures for N2, HCN, CO2, C3H6, and More
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Discover Lewis structures for various molecular formulas, including N2, HCN, CO2, C3H6, and more. Explore their chemical bonding and structural arrangements.
0.800g Match to SO?: Volume Calculation at 725 Torr & 32°C!
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Detailed walkthrough of calculating sulfur dioxide gas volume produced from burning tetraphosphorus trisulfide. Utilizes stoichiometry and the Ideal Gas Law to derive results under specific conditions. Step-by-step guide for understanding chemical reactions and gas volume calculations
Ranking WO? Rb?SO? Pb(C?H?O?)? RbI by Decreasing Formula Mass
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Discover the method to rank compounds like Tungsten Dioxide Rubidium Sulfate Lead Acetate and Rubidium Iodide based on their formula masses. Learn about the significance and calculation of a compound's formula mass. Conclude with an ordered list from heaviest to lightest based on our calculations




















