Chemistry 120 Handouts/Notes

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Chemistry 120 Chapter Five Notes Suppose a compound is analyzed and is found to contain 6.00 grams of carbon, 2.00 grams of hydrogen, and 8.00 grams of oxygen. What is the percent composition of the compound What mass of hydrogen is in a 1.450 kg sample of this compound 5-5
Chemistry 120 Chapter Ten Notes Chapter Ten: Modern Atomic Theory Light and Energy • Electromagnetic radiation(EM) is an especially important form of energy for scientific study. ◦ Many types of “radiant” energy are included under this description, including visible light, X-rays, and radio waves. ◦ EM can be described as waves, which can be characterized by their wavelengths (λ), the distance between the peaks of each wave. ◦ We also may describe light as a particle, called a photon Wavelength and Frequency • The frequency (ν) of waves is measured as the number of waves which occur in a period of time, usually a second. ◦ For example, there are 445 peaks in a second, we would indicate this as 445 s -1 . ◦ Alternatively, the Hertz(Hz) may be used • 1 Hz = 1 s -1 • The frequency and the wavelength are inversely proportional ◦ That is, as the wavelength increases, the frequency decreases, and vice versa. The Mathematical Relationship Between Wavelength and Frequency c ν = λ Where c is the speed of light c = 3.00 ×10 8 m/s Energy of EM Radiation • The total energy of a single photon depends on the frequency (or wavelength) which that photon is associated with. • This is described by the equation E = hν where E is the energy (in J), νis the frequency (in s -1 ), and h is Planck’s Constant (6.626 ×10 -34 J·s). • Greater frequency (and shorter wavelengths) indicate higher energy photons. • Provide a formula relating energy to wavelength rather than frequency: The Electromagnetic Spectrum • EM radiation can be classified into different regions based on its wavelength or its frequency. ◦ The longest wavelenths (smallest frequencies) correspond to radio waves. ◦ The shortest wavelengths (greatest frequencies) correspond to gamma rays. 10-1
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Activity Series of Metals—Test Ve
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Chemistry 120 Net Ionic Equation No
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Type of Substance Type of Electroly
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5. Aqueous solutions of potassium p
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Chemistry 120 Chapter Nine Notes Ch
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Chemistry 120 Chapter Nine Notes b.
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Chemistry 120 Molarity Notes Molari
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Chemistry 120 Molarity Notes 25.00
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Chemistry 120 Chapter Twelve Notes
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Chemistry 120 Handouts/Notes

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