PreparED Study Materials
Notes
Videos
Drawing Lewis Structures for Ionic Compounds: SrO Li2S CaI2 & RbF
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the art of constructing Lewis dot structures for ionic compounds such as SrO Li2S CaI2 and RbF. Understand the electron transfer process by diving into each atom's valency and its role in compound formation. Unpack the intricacies of ionic interactions for a deeper chemistry insight.
Neon Gas Pressure Change in 0.75-L Cylinder
Want To Learn More? To watch the entire video and ALL of the videos in the series:
In this problem, we are tasked with determining the pressure of neon gas in a 0.75-L cylinder at 30°C after compressing it from a 2.50-L sample at 0.00°C and 1.00 atm using the combined gas law equation, with step-by-step calculations leading to a final pressure value of approximately 3.699 atm.
Understanding Average Speed in Kinetic Molecular Theory
Want To Learn More? To watch the entire video and ALL of the videos in the series:
The kinetic molecular theory of gases describes the random motion and speed distribution of gas molecules in a container, and when considering various statements about the average speeds of these molecules, it's important to understand how they behave under different conditions.
Validating & Correcting Chemical Equations: Ba(NO?)? to LiCl Reactions
Want To Learn More? To watch the entire video and ALL of the videos in the series:
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
Mole Count in Elemental Samples (Zn, Ar, Ta, Li)
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video outlines the process of calculating the number of moles in various elemental samples. It begins by explaining the relationship between molar mass and atomic weight. Each sample's mass is divided by the respective element's molar mass to find the number of moles. It provides detailed calculations for four elemental samples: zinc (Zn), argon (Ar), tantalum (Ta), and lithium (Li), converting results to scientific notation where necessary. The script demonstrates how to determine the mole
Differential DNA Damage Responses in Prokaryotes and Eukaryotes
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore unique strategies employed by prokaryotes and discover if they possess exclusive mechanisms for handling extreme DNA damage that elude eukaryotes."