PreparED Study Materials
CHEM 107: General Chemistry I for Engineers
School: Catholic University of America
Number of Notes and Study Guides Available: 1
Notes
Videos
Balancing Equations: From Lead Sulfide to Ammonia Reactions
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video shows you how to balance equations from the reaction of lead(II) sulfide with hydrochloric acid to ammonia's interaction with oxygen. Understand the nuances of atom balancing and grasp the precise stoichiometric relationships.
Hydrogen Peroxide Molecule Classification
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This discussion explores the nature of hydrogen peroxide as a compound composed of hydrogen and oxygen atoms and categorizes it as either a homoatomic or heteroatomic molecule.
Understanding Electron Configurations of Ions: The Noble Gas Connectio
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Unravel the electron configurations of diverse ions and discern their noble gas resemblances. Understand how atoms and ions strive for full outer electron shells for ultimate stability.
Identifying Incorrect Ground-State Electron Configurations and Providi
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video delves into the significance of electron configurations in understanding an atom's chemical behavior. It examines and corrects inaccuracies in the electron configurations of Aluminium (Al), Boron (B), and Fluorine (F). For instance, the electron configuration for Aluminium is initially presented with an incorrect number of electrons in the 2p subshell, stressing the importance of adhering to the rules of electron configuration for precise atomic representation.
Copper Bombardment: Calculating X-ray Photon Energy
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
We'll guide you through the process of calculating the energy associated with X-ray photons when the wavelength is 0.154 nm. This video offers a practical application of physics and helps you understand the energy spectrum of X-rays. Whether you're a science enthusiast or a student, you'll gain valuable insights into this intriguing topic.
Calculating Water's Final Temp after a 345 kJ Heat Boost
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover how to determine the final temperature of a water sample after heat absorption. Utilizing the concept of specific heat capacity and the formula q = mc?T, we calculate the change in temperature and reveal its new state. Experience the transformation from an initial tepid state to a drastically altered thermal condition.



















