PreparED Study Materials
CHEM 101: Intro to Chemistry
School: Ozarks Technical Community College
Number of Notes and Study Guides Available: 1
Notes
Videos
The Remarkable Conservation of Peptidyl Transferase: Drawing Conclusio
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Join us as we explore the fascinating world of peptidyl transferase, one of the most conserved sequences in biology. In this video, we delve into the implications and draw intriguing conclusions from its exceptional conservation across species.
Determining Neutrons from Atomic & Mass Numbers: A Comprehensive Guide
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Understand the relationship between atomic number, mass number, and neutrons within atoms. This video breaks down the simple calculation to determine the number of neutrons for specific elements like Nickel, Uranium, Scandium, and Argon.
Mastering Mass, Moles, Formula Units & Atoms
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Discover how to precisely calculate mass, moles, formula units, and atoms in various compounds. Understand the concept with examples like chromium(III) sulfate decahydrate, dichlorine heptoxide, and lithium sulfate. Master chemistry calculations through a step-by-step guide.
Determining Mass Percent Concentration of Solutions
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This instructional video demonstrates the process of calculating the mass percent of various solutions, using the formula "mass of solute divided by mass of solution, all multiplied by 100%." It provides step-by-step calculations for three different solutions, revealing the concentration of each solute in terms of mass percent, offering a practical understanding of quantifying solute proportions in solutions.
Comparing Structural Features of Sphingomyelins and Glycolipids
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This video explores the structural and functional differences between sphingomyelins and glycolipids, two types of lipids found in cell membranes, highlighting their commonalities in backbone and fatty acid composition and their distinctive roles in cell structure and recognition.
Lattice Energy: Always Positive; Hydration Energy: Always Negative
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In this video we clarify why lattice energy in solids is always a positive value due to the energy needed to separate ions making it an endothermic process. On the flip side hydration energy is always negative as it releases heat when ions dissolve in water making it an exothermic reaction. We use sodium chloride as a real-world example to illustrate these crucial thermodynamic concepts