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Section 14.3

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  1. Section 14.3 The Ideal Gas Law

  2. Objectives • Relate the amount of gas present to its pressure, temperature, and volume by using ideal gas law • Compare the properties of real an ideal gases

  3. Key Terms • Ideal gas constant, R • Ideal gas law

  4. Ideal Gas Law: • PV = nRT • n= number of moles • R is a constant

  5. Table 14-1

  6. Real vs Ideal Gases • Ideal  particles do not take up space; no intermolecular forces • Follows all gas laws always • Real  Particles have some volume; some forces • Approximately follows laws

  7. Finding molar mass • n = m/M • m is mass • M is molar mass • PV = mRT OR M = mRT M PV

  8. Practice Problems • Page 437 • 41-42 • Page 438 • 46-47

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