PreparED Study Materials
CHEM 161: Intro Applied Chemistry I
School: University of Massachusetts
Number of Notes and Study Guides Available: 9
Notes
Videos
Weighting Epsom Salts for Baths & CO? in Soda: Molecular Insight
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Learn the step-by-step process to convert moles into grams using the molecular weight of Epsom salts (MgSO?) and carbon dioxide (CO?). From bathtub to soda bottle understand the science behind the amounts
Mastering Molar Mass: Calculations for Key Chemical Compounds
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover how to calculate the molar mass of various chemical compounds, including Mercury(I) chloride, Calcium sulfate dihydrate, Chlorine pentoxide, and Sodium hydrogen sulfate. Learn the step-by-step process and atomic mass calculations for accurate results.
Lewis Structures with Atom Connections & Charges
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Learn how to create Lewis structures for various molecules and assign charges where needed. Understand the molecular connectivity and electron distribution.
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.
Moles of H in Samples: H?O, NH?, N?H?, C??H??
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover how to calculate the number of moles of hydrogen in different chemical samples, including H?O, NH?, N?H?, and C??H??.
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.