PreparED Study Materials
Notes
Study Guides
Videos
Vaporization vs. Condensation: Heat Absorption & Release
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Discover the contrasting processes of vaporization and condensation and their thermal nature. Understand why boiling is endothermic, absorbing heat, while condensation is exothermic, releasing heat, and how these processes impact ?H values.
Endothermic vs. Exothermic: Unraveling Heat Changes in Chemical Reacti
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Explore the intricacies of endothermic and exothermic reactions through everyday examples. Delve into the energy dynamics of ice melting and water freezing, while emphasizing the importance of the heat change (?H) in these processes.
Understanding Barometers: How Do They Measure Pressure?
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Join us in this enlightening video as we delve into the inner workings of barometers. Discover how these essential weather instruments operate, using a column of mercury to measure pressure. We'll explore the principles behind this ingenious device and help you understand the science behind pressure measurement. Whether you're a weather enthusiast or a science lover, this video will provide valuable insights into the fascinating world of barometers.
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."
Mole Fractions, Partial Pressures, and Total Pressure Calculation
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Explore the calculations for mole fractions, partial pressures, and total pressure in a 22.4 dm³ vessel with H? and N? at 273.15 K.
Rutherford's Gold Foil: The Pivot to the Modern Nuclear Atom Model
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Discover Rutherford's pivotal Gold Foil Experiment and its impact on atomic theory. Unveil the discrepancies with the Plum Pudding Model. Grasp the birth of the nuclear atom model through unexpected alpha particle deflections.