A) The gas molecules are large enough to occupy a substantial amount of space.
B) A large number of molecules have speeds greater than the average speed.
C) The gas molecules have a very low molar mass.
D) The gas molecules attract one another.
E) None of these.
Correct Answer
verified
Correct Answer
verified
A) 
B) 
C) 
D) 
E) none of these
Correct Answer
verified
Correct Answer
verified
A) 
mL
B) 
mL
C) 
mL
D) 
mL
E) none of these
Correct Answer
verified
Correct Answer
verified
A) F
B) He
C) Na
D) Zn
E) Hg
Correct Answer
verified
Correct Answer
verified
A) He
B) Cl2
C) CH4
D) NH3
E) all gases the same
Correct Answer
verified
Correct Answer
verified
A) If the temperature of the cylinder is changed from 25°C to 50°C,the pressure inside the cylinder will double.
B) If a second mole of argon is added to the cylinder,the ratio T/P would remain constant.
C) A cylinder of identical volume filled with the same pressure of helium must contain more atoms of gas because He has a smaller atomic radius than argon.
D) Two of the above.
E) None of the above.
Correct Answer
verified
Correct Answer
verified
A) Equal amounts of gases occupy the same volume at constant temperature and pressure.
B) The volume of a fixed amount of gas is inversely proportional to its pressure at constant temperature.
C) The volume of a fixed amount of gas is directly proportional to its temperature in Kelvin at constant pressure.
D) The total pressure of a mixture of gases is the simple sum of the partial pressure of all of the gaseous compounds.
E) The rates of effusion of gases are inversely proportional to the square roots of their molar masses.
Correct Answer
verified
Correct Answer
verified
A) CO
B) CO2
C) O3
D) NO
E) NO2
Correct Answer
verified
Correct Answer
verified
A) 1.02 atm
B) 10.29 atm
C) 1.00 atm
D) 4.05 atm
E) 910 atm
Correct Answer
verified
Correct Answer
verified
A) Gas particles have most of their mass concentrated in the nucleus of the atom.
B) The moving particles undergo perfectly elastic collisions with the walls of the container.
C) The forces of attraction and repulsion between the particles are insignificant.
D) The average kinetic energy of the particles is directly proportional to the absolute temperature.
E) All of the above are postulates of the kinetic molecular theory.
Correct Answer
verified
Correct Answer
verified
A) BH3
B) B2H6
C) B4H10
D) B3H12
E) B5H14
Correct Answer
verified
Correct Answer
verified
A) The forces of repulsion between gas molecules are very weak or negligible.
B) Most of the volume occupied by a gas is empty space.
C) When two gas molecules collide,they both gain kinetic energy.
D) The average kinetic energy of a gas is proportional to the absolute temperature.
E) Gas molecules move in a straight line between collisions.
Correct Answer
verified
Correct Answer
verified
Showing 121 - 132 of 132
Related Exams