PreparED Study Materials
CHB 1113: General Chemistry
School: University of Colorado at Boulder
Number of Notes and Study Guides Available: 21
Notes
Study Guides
Videos
Balancing the Photosynthesis Equation: CO?, H?O to Glucose & O?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover the balanced chemical equation for photosynthesis, where CO? and H?O produce glucose and O?. Uncover the step-by-step breakdown of the equation, ensuring atom balance. Grasp a clear understanding of this vital process in plant biology.
Understanding Boiling Points: Ethylene Glycol, Alcohols & Ethers Expla
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video offers insights into the properties and boiling points of different alcohols and ethers, including antifreeze agents like ethylene glycol. We also discuss how molecular structures and interactions impact boiling points, shedding light on key differences among related compounds.
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.
Molecular Lewis Structures for CH?, CO?, H?Se, and NH?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
In this video, we demonstrate the creation of Lewis structures for methane, carbon dioxide, hydrogen selenide, and ammonia, highlighting the arrangement of atoms and bonds in each molecule. The video emphasizes the importance of Lewis structures in visualizing atomic bonding and the presence of lone electron pairs.
Boyle's Law Explained: From Compression to Pressure Calculation
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Learn the intricacies of Boyle's Law through an example involving isothermal compression of a perfect gas. Watch as we calculate the original pressure using the change in volume and final conditions. This tutorial simplifies complex gas laws for easy comprehension.
Calculate a Building's Age Using Nickel-63 Decay
Want To Learn More? To watch the entire video and ALL of the videos in the series:
The scenario involves an archaeologist analyzing iron in an old building containing nickel-63, which has a known half-life of 92 years. With only 0.78% of the original nickel-63 remaining, the goal is to estimate the year when this discovery was made. We delve into the calculations and principles of first-order decay reactions.