PreparED Study Materials
CHEM 131: Chemistry I - Fundamentals of General Chemistry
School: University of Maryland - College Park
Number of Notes and Study Guides Available: 44
Notes
Chem131, week 1 notes (Chemistry)
CHEM 131
University of Maryland - College Park
5 pages | Fall 2016
Chem131, week 3 notes (Chemistry)
CHEM 131
University of Maryland - College Park
6 pages | Fall 2016
Week 2/textbook notes (Chemistry)
CHEM 131
University of Maryland - College Park
2 pages | Fall 2016
Chem 131 week 9 notes (Chemistry)
CHEM 131
University of Maryland - College Park
5 pages | Fall 2016
Chem 131 week 4 notes (Chemistry)
CHEM 131
University of Maryland - College Park
5 pages | Fall 2016
Chem 131 week 7 notes (Chemistry)
CHEM 131
University of Maryland - College Park
4 pages | Fall 2016
Chem 131 week 5 notes (Chemistry)
CHEM 131
University of Maryland - College Park
6 pages | Fall 2016
Chem 131 week 6 notes (Chemistry)
CHEM 131
University of Maryland - College Park
6 pages | Fall 2016
Study Guides
Videos
The original sulfur quantity (tons) for 26M tons SO?
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Explore the environmental impact of sulfur dioxide production, revealing how 26 million tons of this compound conceal 13 million tons of sulfur. It delves into the chemistry of this transformation, converting atomic and molecular masses, providing valuable insights into emissions from activities like burning coal and auto exhaust."
Determining Moles of Released Ions in Dissolution Reactions
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When an ionic compound dissolves in water, it undergoes dissociation into its constituent ions. The total moles of ions released is determined by adding up the moles of each ion generated during this dissociation process. In the case of (a) disodium hydrogen phosphate (Na?HPO?), it dissociates into two sodium ions and one hydrogen phosphate ion. For (b) copper(II) sulfate pentahydrate (CuSO? · 5H?O), it dissociates into one copper ion and one sulfate ion. In (c), nickel(II) chloride (NiCl?) diss
Molecule Count in 0.334 g of C?H?: Ethane Analysis
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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.
CS?, SO?, CH?, & CH?Cl: Are They Polar or Nonpolar Molecules?
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Explore the polarity of Carbon disulfide, Sulfur dioxide, Methane, and Chloromethane. Learn how molecular shape influences electron distribution. Understand which molecules possess a net dipole moment and which ones don't.
Determining Bond Types: Ionic, Polar Covalent, or Covalent in Chemical
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This discussion revolves around the classification of chemical bonds as ionic, polar covalent, or covalent based on the electronegativity difference between the atoms involved. The general criteria for this classification are explained: a difference greater than 1.7 indicates an ionic bond, between 0.5 and 1.7 signifies a polar covalent bond, and less than 0.5 designates a covalent bond. It then applies these criteria to four specific examples, including the CC bond in ethane (H?CCH?), the KI bo