13) If a 50.0 mL sample of xenon gas is at 0.921 atm and 27 \'C, what is the vol
ID: 705805 • Letter: 1
Question
13) If a 50.0 mL sample of xenon gas is at 0.921 atm and 27 'C, what is the volume of the gas at STP? A) 41.9 mL B) 49.4 mL G) 50.6 mL D) 54.9 mL E) 59.7 mL Section: 10.7 Combined Gas Law 14) If the temperature of a liquid increases, what happens to its vapor pressure? A) increases B) decreases C) remains constant D) unpredictable E) none of the above Section: 10.8 The Vapor Pressure Concept 15) If oxygen gas is collected over water at 25 C and 775 torr, what is the partial pressure of the 02? The vapor pressure of water at 25 'C is 23.8 torr. A) 23.8 torr B) 750 torr G) 751 torr D) 775 torr E) 799 torr Section: 10.9 Dalton's Law of Partial Pressures 16) What are the conditions for a real gas to behave most like an ideal gas? A) high temperature, high pressure B) high temperature, low pressure C) low temperature, high pressure D) low temperature, low pressure E) none of the above Section: 10.10 Ideal Gas Behavior 17) What is the term for the resistance of a liquid to spread and its tendency to form spherical droplets? A) dipole attraction B) dispersion forces C) surface tension D) viscosity E) none of the aboveExplanation / Answer
Answer (14) :- (A) increases, option is correct.
As the temperature of liquid increases its vapor pressure also increases and when temperature decreases its vapor pressure also decreases. So, we can say that temperature is directly proportional to the vapor pressure.
Answer 16 :- (B) high temperature and low pressure is correct option.
A gas behaves more like an ideal gas at higher temperature and lower pressure, as the potential energy due to intermolecular forces becomes less significant compared with the particles' kinetic energy, and the size of the molecules becomes less significant compared to the empty space between them.
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