CHEM 119: Introductory Chemistry

School: University of Illinois

Number of Notes and Study Guides Available: 0

Videos

Unveiling Earth's Crust: Calculating Silicon Mass

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Explore the fascinating process of calculating the mass of silicon in Earth's crust. Learn how to convert Earth's total mass to grams, determine the crust's mass percentage, and find the silicon's mass within the crust. Discover the scale of silicon's presence in our planet's outer layer.

Calculating Vapor Pressure & Its Lowering: Urea in Water at 35°C

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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

Chips Nutritional Energy and Body Fat Conversion

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Discover how to calculate the nutritional energy in a bag of chips, and learn the science behind converting excess energy into body fat.

Rutherford's Gold Foil: The Pivot to the Modern Nuclear Atom Model

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Discover Rutherford's pivotal Gold Foil Experiment and its impact on atomic theory. Unveil the discrepancies with the Plum Pudding Model. Grasp the birth of the nuclear atom model through unexpected alpha particle deflections.

Validating & Correcting Chemical Equations: Ba(NO?)? to LiCl Reactions

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Dive into the accuracy of four chemical reactions involving compounds like Barium Nitrate and Lithium Chloride. Discover which reactions yield precipitates which are correct and which need correction. A comprehensive review from Barium Sulfate formation to Lead Chloride precipitation

Tausonite's Unit Cell: Atoms & Formula Explained

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Unpack the intricacies of solid-state chemistry, focusing on the unit cell structure of tausonite. Discover its empirical formula, atomic arrangement, and the unique coordination patterns of titanium and strontium with oxygen atoms.