PreparED Study Materials
CHEM 7644: Chemistry UA 125-001
School: New York University
Number of Notes and Study Guides Available: 5
Notes
Videos
Why is a short RNA primer needed for replication?
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Unlocking the Mystery of Short RNA Primers in DNA Replication: Discover the essential role they play and why they are a crucial component in the replication process. Join us in this video as we delve into the fascinating world of molecular biology and DNA replication.
Comparing Masses: Analyzing Water, Ethanol, Chloroform & Balsa Wood
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Explore the relationship between mass, density, and volume using real-life examples, including water, ethanol, chloroform, and balsa wood. Learn the process of calculating mass and uncover which substance has the highest mass based on given conditions.
Understanding Reaction Rate Decrease Over Time
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This explanation delves into the phenomenon where the reaction rate decreases over time due to the decrease in reactant concentration, resulting in fewer successful collisions and reactions, without revealing specific examples or findings.
Calculating the Mass of CCl4: Using Density and Volume Insights
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Learn the method to calculate the mass of a substance using its density and volume. This video demonstrates the practical application of density in determining the mass of carbon tetrachloride (CCl4) from a given volume.
Drawing Lewis Structures for Ionic Compounds: SrO Li2S CaI2 & RbF
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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.
Determining Oil & Ball Bearing Density: Physics Explained
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Discover how to determine the density of mineral oil and a metal ball bearing using a graduated cylinder. Learn the method of calculating the mass difference and volume to deduce the density and radius of the ball. Watch a detailed physics experiment explained step by step.






















