If a nitrogen atom and a slightly heavier oxygen atom have equal average speeds, which has the greater kinetic energy?
A) nitrogen
B) oxygen
C) both the same
D) need more information
Answer: B
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Correctly identify the following functional groups in this organic molecule—amide, ester, ketone, ether, alcohol, aldehyde, amine
A) 1 = ether, 3 = ester, 6 = aldehyde, 9 = alcohol B) 2 = amide, 4 = ester, 7 = amine, 8 = ether C) 1 = ester, 5 = alcohol, 8 = ether, 9 = ketone D) 2 = amide, 6 = aldehyde, 7 = amine, 8 = ether
The circuit below contains three 100-W light bulbs and a capacitor. The emf ? = 110V. At the instant the switch S is closed, which light bulb is brightest?
a.
A
b.
B
c.
C
d.
A and B
e.
All three are equally bright.
Consider two containers with the same volume and temperature. Container One holds "dry" air--a mixture of nitrogen and oxygen. Container Two holds "moist" air. The "moist" air has the same ratio of nitrogen to oxygen molecules, but also contains water vapor. According to the ideal gas law, if the pressures are equal, the weight of the gas in Container One will be
a. lighter than the gas inside the second container. b. equal to the weight of the gas in the second container. c. heavier than the gas inside the second container. d. all the above are incorrect because the pressures cannot be equal.
Compared to Keck, Hubble Space Telescope has:
A) better light gathering power but worse resolution B) worse resolution and light gathering power C) better magnification D) better resolution and light gathering power E) better resolution but worse light gathering power