PreparED Study Materials
CHM 103: Introduction to Chemistry
School: Arizona State University
Number of Notes and Study Guides Available: 3
Notes
Study Guides
Videos
Unveiling the Water-to-Salt Ratio in Barium Chloride Hydrate
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the process of determining the number of water molecules in a barium chloride hydrate. Through a reaction with sulfuric acid, the video highlights how to derive the formation of barium sulfate and its mass calculations. A comprehensive chemical analysis leads to finding the elusive 'x' value, revealing the water-to-salt ratio.
Molecule Count in 0.334 g of C?H?: Ethane Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This instructional video guides you through the process of determining the number of molecules in a given sample. It illustrates the conversion from grams to moles using the molar mass of the substance and then to molecules using Avogadro's number, providing a practical example with ethane (C?H?) to calculate approximately 6.67 x 10²¹ molecules in a 0.334 g sample.
Chromium Oxides: Acidity Comparison in Water
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Compare the acidity of chromium trioxide (CrO?) and chromium (II) oxide (CrO) in water. Chromium trioxide forms strong chromic acid increasing hydronium ions, while chromium (II) oxide has weaker oxidizing properties, resulting in a less acidic solution.
What is the expected ground-state electron configuration for Te²??
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Join us in this illuminating video as we unravel the expected ground-state electron configuration for Te²?. We dive into the world of chemistry to explain the electron structure of this fascinating ion. Whether you're a student, a chemistry enthusiast, or simply curious about the periodic table, this video provides a clear and comprehensive breakdown of the electron configuration for Te²?. Discover the secrets of electron arrangement and explore the intriguing properties of tellurium in its doub
Converting Moles to Grams: Aluminum & Chlorine Atomic Mass Breakdown
Want To Learn More? To watch the entire video and ALL of the videos in the series:
"Explore the intricate world of atomic masses using aluminum and chlorine as examples. Understand the concept of 'mole' and its relevance in chemistry. Learn to calculate masses of moles for elements based on atomic weights.
Calculate oxygen molar concentration in water at 25°C with a partial p
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video explores molar concentration (molarity) and demonstrates the calculation of oxygen's molar concentration in water at 25°C, considering a partial pressure of 0.22 atm by employing Henry's Law and the given Henry's Law constant for oxygen, revealing that under these conditions, there are 2.86 x 10?? moles of oxygen per liter of water, highlighting the significance of understanding these concepts for managing gas dissolution in liquids across varying circumstances.