ข้อ1 Which of the following are postulates of the kinetic-molecular theory of gases? 1) The kinetic energy of a gas molecule is inversely proportional to its temperature. 2) At a given temperature, all gases have the same average velocity. 3) At a given temperature, all gases have the same average kinetic energy.
ข้อ2 Which of the following statements concerning gas pressure are correct? 1) Gas pressure arises from gas molecules sticking to the wall of the container holding the gas. 2) The force exerted on the inside walls of a gas-filled container is inversely proportional to the number of gas molecules within the container. 3) As the temperature of a gas increases, gas molecules exert more force on the walls of their container.
ข้อ3 Acetylene burns in oxygen to give CO₂ and H₂O, according to the equation. 2 C₂H₂ (g) + 5 O₂ (g) → 4 CO₂ (g) + 2 H₂O(g) What volume of CO₂ is produced in the reaction of 24 L C₂H₂ with excess O₂?
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ข้อ2 Which of the following statements concerning gas pressure are correct? 1) Gas pressure arises from gas molecules sticking to the wall of the container holding the gas. 2) The force exerted on the inside walls of a gas-filled container is inversely proportional to the number of gas molecules within the container. 3) As the temperature of a gas increases, gas molecules exert more force on the walls of their container.
ข้อ3 Acetylene burns in oxygen to give CO₂ and H₂O, according to the equation. 2 C₂H₂ (g) + 5 O₂ (g) → 4 CO₂ (g) + 2 H₂O(g) What volume of CO₂ is produced in the reaction of 24 L C₂H₂ with excess O₂?
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