PreparED Study Materials
CHEM 004: Gen Chem II (Chem Majors)
School: Howard University
Number of Notes and Study Guides Available: 1
Study Guides

General chemistry ii exam 4 practice exam (Chemistry)
CHEM 004
Howard University
2 pages | Fall 2016
Videos
Nickel(II) Nitrate Solution Composition Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
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.
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:
full solution
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.
Amino Acid Reaction: Peptide Bond Formation and Product Diversity
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the reaction between alanine and glycine, two amino acids, and unravel whether this process results in multiple reaction products. We'll delve into the intriguing world of peptide bond formation and examine the potential diversity of products that may emerge from this biochemical reaction."
Calculating Percent Composition: Using Molecular Formulas & Atomic Mas
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Understand the process of calculating percent composition using the molecular formula. Grasp the methodology with compounds like C2H4O2, CH2O2, and more. Discover how atomic masses influence the mass percent of elements in various compounds.
Strong vs. Weak Acids: Ionization Differences in Water
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Uncover the distinct behaviors of hydrochloric acid and acetic acid in water. Learn about the complete ionization of strong acids and the partial ionization of weak ones, emphasizing the differentiation in proton donation.
Chromium Oxides: Acidity Comparison in Water
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
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.








