Chapter 5: Gases
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Questions and Answers

What is the ideal gas law equation?

  • P1V1 = P2V2
  • V1 = V2
  • PV = nRT
  • P1V1 n1T1 = P2V2 n2T2 (correct)

    • What is the temperature in Kelvin when the temperature in Celsius is 25°C?

  • 348 K
  • 323 K
  • 298 K (correct)
  • 248 K

    • What is the volume of 49.8 g of HCl at STP?

  • 50.7 L
  • 30.7 L (correct)
  • 20.7 L
  • 40.7 L

    • What is the final pressure of argon in the lightbulb?

    <p>1.48 atm</p> Signup and view all the answers

    What happens to the volume of a gas when its temperature is increased, while its pressure remains constant?

    <p>It increases</p> Signup and view all the answers

    What is the volume of the balloon when the temperature in the car reaches 90°C?

    <p>2.38 L</p> Signup and view all the answers

    What is the new volume of air trapped in the tube?

    <p>0.0105 L</p> Signup and view all the answers

    What is the volume of the balloon when the temperature in the car reaches 90°C?

    <p>2.45 L</p> Signup and view all the answers

    What is the pressure of O2 in the steel tank?

    <p>Cannot be determined with the given information</p> Signup and view all the answers

    What happens to the volume of a gas when its pressure is increased, while its temperature remains constant?

    <p>It decreases</p> Signup and view all the answers

    What is the relationship between the pressure and temperature of a gas?

    <p>Directly proportional</p> Signup and view all the answers

    What is the volume of the helium-filled balloon at the top of Mt. Hood, Oregon’s highest mountain?

    <p>Cannot be determined with the given information</p> Signup and view all the answers

    What is the relation between volume and pressure of a gas at constant temperature?

    <p>Volume is inversely proportional to pressure</p> Signup and view all the answers

    What is the pressure of the chlorine gas in mmHg if the volume is reduced from 946 mL to 154 mL at constant temperature?

    <p>1452 mmHg</p> Signup and view all the answers

    What is the unit of pressure that is equivalent to 760 mmHg?

    <p>1 atm</p> Signup and view all the answers

    What is the relation between volume and temperature of a gas at constant pressure?

    <p>Volume is directly proportional to temperature</p> Signup and view all the answers

    What is the relationship between the volume of a gas and its temperature at constant pressure?

    <p>The volume of the gas decreases as the temperature decreases</p> Signup and view all the answers

    What is the pressure of the CO2 gas in atmospheres?

    <p>0.3834 atm</p> Signup and view all the answers

    What is the formula to convert Celsius to Kelvin?

    <p>T (K) = t (°C) + 273.15</p> Signup and view all the answers

    What is the state of matter characterized by a fixed volume and a fixed shape?

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

    What is the relationship between the volume of a gas and the number of moles of the gas at constant temperature and pressure?

    <p>The volume of the gas is directly proportional to the number of moles</p> Signup and view all the answers

    What is the standard molar volume of an ideal gas at STP?

    <p>22.4141 L</p> Signup and view all the answers

    What is the value of the universal gas constant R in atm·L/mol·K?

    <p>0.0821 atm·L/mol·K</p> Signup and view all the answers

    What is the equation that relates the volume of a gas to the number of moles of the gas, the temperature, and the pressure?

    <p>PV = nRT</p> Signup and view all the answers

    What is the molecular weight of potassium chloride?

    <p>74.55 g/mol</p> Signup and view all the answers

    What is the volume of CO2 produced at 37°C and 1.00 atm when 5.60 g of glucose are used up in the reaction?

    <p>4.76 L</p> Signup and view all the answers

    What is the amount of chlorine gas in moles when 5.25 L of chlorine gas at 0.950 atm and 293 K reacts with 17.0 g of potassium metal?

    <p>0.207 mol</p> Signup and view all the answers

    What is the mass of potassium chloride formed when 5.25 L of chlorine gas at 0.950 atm and 293 K reacts with 17.0 g of potassium metal?

    <p>30.9 g KCl</p> Signup and view all the answers

    What is the temperature in Kelvin of the reaction between chlorine gas and potassium metal?

    <p>293 K</p> Signup and view all the answers

    What is the mole ratio of potassium chloride to chlorine gas in the balanced equation Cl2 (g) + 2K (s) → 2KCl (s)?

    <p>2:1</p> Signup and view all the answers

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