PreparED Study Materials
CHM 109: Introductory Chemistry
School: Grand Valley State University
Number of Notes and Study Guides Available: 6
Notes
Study Guides
Videos
Argon Isotopes: Protons, Neutrons & Electrons Breakdown
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Explore the captivating branches of philosophy, understanding ethics as our moral guide, aesthetics as the interpreter of beauty, and logic as the foundation for clear reasoning. Delight in the insights these disciplines offer, enhancing our perspectives on life, art, and thought.
Calculating Ksp for Ca3(PO4)2 at 25°C: Step-by-Step Guide
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Unravel the concepts of 'Molar Solubility' and 'Solubility Product' to gauge salt solubility. Explore how Calcium Phosphate dissociates in solutions and calculate its unique Ksp value.
Positron Emission Nuclear Equations: Co-55, Na-22, F-18
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Learn how to write nuclear equations for positron emission with Co-55, Na-22, and F-18. Explore the fascinating world of nuclear reactions.
Calculate a Building's Age Using Nickel-63 Decay
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The scenario involves an archaeologist analyzing iron in an old building containing nickel-63, which has a known half-life of 92 years. With only 0.78% of the original nickel-63 remaining, the goal is to estimate the year when this discovery was made. We delve into the calculations and principles of first-order decay reactions.
Converting Various Units: Weight, Time, Height, and Volume
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This video focuses on unit conversions and the practical use of conversion factors to translate quantities between different units. It provides clear examples of converting 70 kilograms to pounds, translating 14 billion years into seconds, changing the height of a basketball player from feet and inches to meters, and converting cubic meters to liters, illustrating the importance of this skill in various scientific and everyday scenarios.
Number of molecules in 3.5g H?O, 56.1g N?, 89g CCl?, 19g C?H??O?
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This video shows how to determine the number of molecules in a given sample by utilizing the concept of moles, Avogadro's number (6.022 x 10²³), and the molar mass of the substance. It provides step-by-step calculations for different substances, converting mass to the number of molecules and highlighting the versatile application of this approach.