PreparED Study Materials
CHEM 31: Chemical Principles Accelerated
School: Stanford University
Number of Notes and Study Guides Available: 9
Notes
Videos
Drawing the Lewis Structure for Glycine: The Protein Building Block
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover how amino acids, specifically glycine, form the foundation of proteins. Understand and visualize the Lewis structure representation of glycine. Grasp the significance of atomic bonding and electron distribution.
Nickel(II) Nitrate Solution Composition Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this analysis, we determine the composition of a solution prepared by dissolving 12.15g of nickel(II) nitrate in 175mL of water (density 1.00 g/mL). The mass percent of nickel(II) nitrate is found to be approximately 6.50%, and the mole fraction of nickel(II) ions in the solution is calculated as 0.00672.
Tailors' Seam Measurements: Precision and Accuracy Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
An in-depth analysis of the precision and accuracy in seam measurements by three apprentice tailors: X, Y, and Z, as they measure a pair of trousers. Understand how their measurements compare to the true length of 32.0 inches.
Vaporization vs. Condensation: Heat Absorption & Release
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the contrasting processes of vaporization and condensation and their thermal nature. Understand why boiling is endothermic, absorbing heat, while condensation is exothermic, releasing heat, and how these processes impact ?H values.
Predicting Precipitates: Al(NO?)? & NaOH Reaction Explained
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Unlock the secrets of precipitation reactions as we mix Aluminium nitrate and Sodium hydroxide. Discover how Al(NO?)? and NaOH interact forming the insoluble Aluminium hydroxide Al(OH)?. Break down the net ionic equation to highlight only the active participants.
Reactions of Isopentyl Bromide with Various Reagents
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the fascinating reactions of isopentyl bromide with a variety of reagents and uncover the expected products in each scenario.









