PreparED Study Materials
CHEM 112: CHEM 112
School: University of South Carolina - Columbia
Number of Notes and Study Guides Available: 2
Notes
Videos
Understanding Microwaves: Boiling Water's Time and Photon Count
Want To Learn More? To watch the entire video and ALL of the videos in the series:
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.
Indium Secrets: Electron Config Magnetism & HCl Reaction
Want To Learn More? To watch the entire video and ALL of the videos in the series:
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 Solutions: 12g Sucrose in 4.1%, 3.2%, & 12.5% Cases
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Determining the total mass of sucrose solutions at varying concentrations: 4.1% 3.2% and 12.5%. Learn step-by-step calculations to find solution masses containing 12 grams of sucrose. Results: ~292.68g ~375g and 96g for each concentration respectively.
Determining the Equilibrium Constant: Initial & Final Concentrations
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the method to determine the equilibrium constant for a reaction between iron III ions and thiocyanate ions. Learn to deduce equilibrium concentrations from initial values and reaction stoichiometry. Grasp the importance of the equilibrium constant value of 325.1 in assessing the reaction's favorability.
Understanding Polar & Nonpolar Molecules: From Diazene to Nitrogen Dio
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the properties of various molecules like diazene, hydrogen peroxide, and carbon tetrafluoride. Understand the influence of molecular shape and electronegativity on polarity. Discover why some are polar while others are nonpolar based on their structure.
Determining Bond Types: Ionic, Polar Covalent, or Covalent in Chemical
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This discussion revolves around the classification of chemical bonds as ionic, polar covalent, or covalent based on the electronegativity difference between the atoms involved. The general criteria for this classification are explained: a difference greater than 1.7 indicates an ionic bond, between 0.5 and 1.7 signifies a polar covalent bond, and less than 0.5 designates a covalent bond. It then applies these criteria to four specific examples, including the CC bond in ethane (H?CCH?), the KI bo