Mars has a sufficient mass and a low enough temperature that water molecules could exist in its atmosphere as vapor. One reason Mars' atmosphere does not contain a significant amount of water vapor is that
a. Mars formed in a part of the solar nebula that lacked oxygen.
b. Mars formed in a part of the solar nebula that lacked hydrogen.
c. All of the water vapor was released in the impact that formed Deimos.
d. Ultraviolet radiation breaks the water molecule into less massive particles that can escape.
e. The water molecule combines readily with chlorine to form hydrochloric acid.
D
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Alpha titanium alloys with concentrations of aluminum greater than 5 percent can be precipitation-hardened with the precipitate _________.
Fill in the blank(s) with the appropriate word(s).
The exclusion principle applies to what kind of particles?
A) all fermions, but not bosons B) all bosons, but not fermions C) only leptons, but not other fermions D) both fermions and bosons E) only exchange bosons
Why does Venus appear so bright to the eye?
A) It gets closer to us than any other planet does. B) Venus is closer to the Sun, so gets more intense sunlight. C) The planet's cloud-cover is highly reflective, reflecting 60% of the Sun's light. D) As seen from Earth, the disk of Venus can appear larger than any other planet's. E) All of the above are correct.
Consider the n = 9 shell. (a) What is the largest value of the orbital quantum number, l, in this shell? (b) How many electrons can be placed in this shell?
What will be an ideal response?