Which would have the lower average molecular kinetic energy?
(i) a sample of hydrogen gas, H2, at 0°C
(ii) a sample of oxygen gas, O2, at 100° C
1.(i)
2.(ii)
3.They have the same average molecular kinetic energy.
4.It is impossible to tell.
1
You might also like to view...
A stars exhibit strong hydrogen absorption lines because the surface temperature of 10,000 K is high enough to place most hydrogen in an excited, but not yet ionized, state
The transitions from this excited state then correspond to visible light wavelengths. Which of the following statements is a plausible explanation for why G stars exhibit weak hydrogen absorption lines? A) G stars contain very little hydrogen. B) At these high temperatures, nearly all the hydrogen is ionized, and unable to interact with light. C) G stars are too cool to excite hydrogen atoms to the first energy level from which they can then absorb visible wavelengths of light.
You carry a 7.0-kg bag of groceries above the ground at constant speed across a room. How much work do you do on the bag in the process?
A) 0.00 J B) 82 J C) 185 J D) 157 J
Mesons are composed of
A. any odd number of quarks. B. three quarks of matching color. C. three quarks of three different colors. D. a colorless quark-antiquark pair.
A boy kicks a football with an initial velocity of 20 m/s at an angle of 25° above the horizontal. The magnitude of the acceleration of the ball while it is in flight is
A) 25 m/s2. B) 20 m/s2. C) 9.8 m/s2. D) 8.4 m/s2. E) 0 m/s2.