Mastering Molar Mass
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Questions and Answers

Which of the following is a key concept discussed in Chapter 3 of 'Fuels, Combustion, and Flue Gas Analysis'?

  • Boiler design
  • Molar mass (correct)
  • Chemical reactions
  • Thermal efficiency
  • Which unit is used to express atomic mass and molecular mass?

  • Mole
  • Kilogram
  • Gram
  • Atomic mass unit (AMU) (correct)
  • What is the purpose of using simple tables in combustion calculations?

  • To organize data (correct)
  • To simplify calculations
  • To determine air supplied for combustion
  • To improve combustion efficiency
  • What is the atomic mass of sulfur?

    <p>32</p> Signup and view all the answers

    Which topic is NOT covered in Chapter 3 of 'Fuels, Combustion, and Flue Gas Analysis'?

    <p>Thermal efficiency</p> Signup and view all the answers

    What is the molar mass of boron?

    <p>36</p> Signup and view all the answers

    What is the mass of 1 mol of sulfur?

    <p>44 g</p> Signup and view all the answers

    Which of the following is true about the coefficients in a chemical equation?

    <p>They represent the number of kilomoles of each compound.</p> Signup and view all the answers

    What principle of stoichiometry states that equations must balance?

    <p>The law of conservation of mass</p> Signup and view all the answers

    Which law states that all substances combine in accordance with simple, definite weight relationships?

    <p>The law of combining weights</p> Signup and view all the answers

    What do the coefficients in a chemical equation represent when the volumes of gases are at the same temperature and pressure?

    <p>The volumes of the reactants and products</p> Signup and view all the answers

    According to the given information, what is the ratio of CH4 to CO2 in the combustion of methane?

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

    According to the given information, what is the molar mass of oxygen (O2)?

    <p>32 kg/kmol</p> Signup and view all the answers

    According to the given information, what is the balanced equation for the combustion of propane (C3H8)?

    <p>C3H8 + 5O2 -&gt; 3CO2 + 4H2O</p> Signup and view all the answers

    According to the given information, what is the mass of oxygen (O2) required to burn 30 kg of ethane (C2H6)?

    <p>54 kg</p> Signup and view all the answers

    According to the general gas law, which equation represents the relationship between pressure (P), volume (V), temperature (T), and mass (m) for an ideal gas?

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

    Dalton's law states that the pressure of a mixture of gases is equal to the sum of the partial pressures of its constituents. Which equation represents Dalton's law?

    <p>$PT = P_1 + P_2 + P_3$</p> Signup and view all the answers

    According to Avogadro's law, equal volumes of all gases at the same temperature and pressure have the same number of molecules. For ideal gases, the mole percentage is the same as the volume percentage.

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

    In a complete combustion reaction, which of the following is produced?

    <p>Carbon dioxide (CO2) and water (H2O)</p> Signup and view all the answers

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