PreparED Study Materials
CHM 212: Principles of Chemistry II
School: Marshall University
Number of Notes and Study Guides Available: 3
Notes
Videos
Nickel(II) Nitrate Solution Composition Analysis
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In this analysis, we determine the composition of a solution prepared by dissolving 12.15g of nickel(II) nitrate in 175mL of water (density 1.00 g/mL). The mass percent of nickel(II) nitrate is found to be approximately 6.50%, and the mole fraction of nickel(II) ions in the solution is calculated as 0.00672.
Mole Count in Elemental Samples (Zn, Ar, Ta, Li)
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This video outlines the process of calculating the number of moles in various elemental samples. It begins by explaining the relationship between molar mass and atomic weight. Each sample's mass is divided by the respective element's molar mass to find the number of moles. It provides detailed calculations for four elemental samples: zinc (Zn), argon (Ar), tantalum (Ta), and lithium (Li), converting results to scientific notation where necessary. The script demonstrates how to determine the mole
Protons reveal electron count in atoms. Which statement applies?
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In this video, we explore the information that knowledge of the number of protons in a neutral element's atom can provide. Options for determining neutron count, electron count, and identifying the element's name are examined, with a conclusion that it allows us to know both the number of electrons and the element's name.
Classify: (a) Mixture (b) Element (c) Mixture (d) Compound
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In this video, we classify substances as elements, compounds, or mixtures, with air and soy sauce as mixtures, iron as an element, and table salt as a compound.
Evolutionary Implications of Cytochromes vs. Hemoglobin and Myoglobin
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In this video, we delve into the fascinating world of evolutionary adaptations in heme-containing proteins.
1828 Synthesis of Urea: Pioneering Steps in Biochemistry
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Explore the groundbreaking moment in 1828 when Wöhler synthesized urea, the first organic compound. Join us in this video as we trace the profound impact of this achievement on the field of biochemistry and its significance in unraveling the mysteries of life's complex chemistry.