CHEM1020 Chemistry Week 2 – GASES 1 Quiz
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Questions and Answers

If a gas has a volume of 500 mL at 20°C, what would its volume be at 40°C, assuming constant pressure and amount of gas?

  • 250 mL
  • 667 mL (correct)
  • 500 mL
  • 400 mL
  • What is Charles's Law primarily used to describe?

  • The relationship between pressure and volume of a gas at constant temperature
  • The relationship between pressure and temperature of a gas
  • The relationship between volume and temperature of a gas at constant pressure (correct)
  • The behavior of an ideal gas under different conditions
  • What is the primary difference between Charles's Law and Gay-Lussac's Law?

  • Charles's Law deals with volume, while Gay-Lussac's Law deals with pressure (correct)
  • Charles's Law deals with pressure, while Gay-Lussac's Law deals with volume
  • Charles's Law is used for real gases, while Gay-Lussac's Law is used for ideal gases
  • Charles's Law is used for ideal gases, while Gay-Lussac's Law is used for real gases
  • What is the pressure of the tire in Ahmed's Land Cruiser when the temperature is 25°C, given that it is 35 psi at 45°C?

    <p>28 psi</p> Signup and view all the answers

    What is the constant in the equation PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin?

    <p>R</p> Signup and view all the answers

    Which of the following statements is true about ideal gases?

    <p>They always obey the ideal gas law</p> Signup and view all the answers

    If 4.8 g of methane gas (CH4) is placed in a 2 L container at 25 °C, what is the pressure in atm?

    <p>2.7 atm</p> Signup and view all the answers

    What is the volume of 3.2 moles of gas at SATP conditions?

    <p>78.288 L</p> Signup and view all the answers

    What is the molar volume of a gas at STP?

    <p>24.45 L/mol</p> Signup and view all the answers

    If 2.4 moles of gas occupies 50 L at 1.5 atm pressure, what will be the temperature in °C?

    <p>600 °C</p> Signup and view all the answers

    Which gas law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure?

    <p>Charles's Law</p> Signup and view all the answers

    If 3 moles of nitrogen gas (N2) are at 5 atm pressure, what will be the volume occupied at 27 °C?

    <p>58.8 L</p> Signup and view all the answers

    What property of gases allows them to take up the largest possible volume?

    <p>High compressibility</p> Signup and view all the answers

    Which statement best describes the behavior of gas particles according to the kinetic theory of gases?

    <p>Gas particles are always moving randomly.</p> Signup and view all the answers

    Which gas law describes the inverse relationship between pressure and volume of a gas?

    <p>Boyle’s law</p> Signup and view all the answers

    What happens to the total kinetic energy of gas particles during elastic collisions?

    <p>No change</p> Signup and view all the answers

    Which property helps distinguish gases from solids and liquids?

    <p>Don't take the shape of the container</p> Signup and view all the answers

    Which gas law combines the relationships between pressure, volume, and temperature?

    <p>Combined gas law</p> Signup and view all the answers

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