PreparED Study Materials
BIOL CH 14: Chemistry 14A: Atomic and Molecular Structure, Equilibria, Acids, and Bases
School: University of California - Los Angeles
Number of Notes and Study Guides Available: 13
Notes
Videos
Structures & Classifications of C?H?? Alkyl Groups: From Primary to Te
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Explore the diverse structures of C?H?? alkyl groups and classify them into primary, secondary, or tertiary categories. Through a visualization of carbon atom arrangements, uncover the nuances of n-pentyl, sec-pentyl, tert-pentyl, isopentyl, and neopentyl structures.
Understanding Microwaves: Boiling Water's Time and Photon Count
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This video breaks down the process of calculating the time and number of photons required to boil water in a microwave. Using given power, wavelength, and water specifics, we determine both energy needs and photon count.
Chromium Oxides: Acidity Comparison in Water
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Compare the acidity of chromium trioxide (CrO?) and chromium (II) oxide (CrO) in water. Chromium trioxide forms strong chromic acid increasing hydronium ions, while chromium (II) oxide has weaker oxidizing properties, resulting in a less acidic solution.
Breaking Down Mixtures: Finding Mass Percent of Sodium Compounds
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Uncover the method to determine mass percentages of Sodium Bromide and Sodium Sulfate in a mixture using the given Sodium content. Walk through a step-by-step calculation leveraging molar masses to derive the composition. Discover the resulting mass percentages: 23.85% for Sodium Bromide and 76.15% for Sodium Sulfate
CO?: Linear & Nonpolar with Temp Dipole Moments Explained!
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Uncover the nuances of the CO? molecule's polarity and its electron dynamics. Understand how bending and stretching motions influence its electron density. Grasp the analogy of CO? to a jumping rope, highlighting its overall nonpolar nature.
Calculating Backpacker's Fuel Weight: White Gas Density
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Learn how to determine the weight of white gas carried by a backpacker using its density. A valuable skill for hikers and campers.