CHEM 221: Mole Concept

Explore the concept of bond energy with the H-Cl bond as a prime example. Delve into the energy dynamics of bond breaking (endothermic positive ?H) versus bond formation (exothermic negative ?H). Understand how the magnitude remains consistent but signs differ based on energy absorption or release.

Learn about mass changes in an iron bar when exposed to moist air, including the formation of rust (Fe?O?) and how to calculate the final mass.

Learn the process of determining the density of a rectangular metal bar using its measurements. Understand how volume and mass play a crucial role in the calculation, and the importance of representing results with the correct number of significant figures

Discover the fundamental concept of Standard Temperature and Pressure (STP) and its relevance in determining the volume of different gases. Learn to calculate gas volumes at STP using real-life examples of Chlorine, Nitrogen, Helium, and Methane. Grasp essential chemistry concepts seamlessly with practical demonstrations.

Explore the reaction between alanine and glycine, two amino acids, and unravel whether this process results in multiple reaction products. We'll delve into the intriguing world of peptide bond formation and examine the potential diversity of products that may emerge from this biochemical reaction."