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1 | |
Based on your knowledge of the outer shell electrons, which is not a reasonable ion? |
| | A) | Rb+ |
| | B) | Sr+2 |
| | C) | Br- |
| | D) | A, B, and C are reasonable ions. |
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2 | |
Given that the frequency of a photon in the electromagnetic spectrum is 4.29 x 1014 s-1, what is its wavelength? |
| | A) | 699 nm |
| | B) | 128 nm |
| | C) | 164 nm |
| | D) | 105 nm |
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3 | |
The largest percentage of energy from the Sun comes to Earth in the form of |
| | A) | microwaves. |
| | B) | ultraviolet radiation. |
| | C) | visible light. |
| | D) | infrared radiation. |
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4 | |
You have seen images in the text that show a large area of dark purple centered on Antarctica. Which statement best explains the purple color in these images? |
| | A) | These are real-color photographs showing the sky to be purple rather than blue over the poles. |
| | B) | These are false-color images in which purple represents very low levels of stratospheric ozone. |
| | C) | These are real-color photographs that represent the UV Index in that region. |
| | D) | These are false-color images in which purple represents very high Dobson Unit readings. |
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5 | |
Which statement concerning ozone is correct? |
| | A) | Ozone is considered beneficial in the troposphere because it protects us from ultraviolet light but is an air pollutant in the stratosphere. |
| | B) | Ozone is considered an air pollutant in the troposphere but beneficial in the stratosphere because it protects us from ultraviolet light. |
| | C) | Ozone is considered an air pollutant in both the troposphere and stratosphere because of its toxicity. |
| | D) | Ozone is considered beneficial in both the troposphere and stratosphere because it protects us from ultraviolet light. |
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6 | |
How many protons, neutrons, and electrons are in a neutral atom of 5224Cr? |
| | A) | protons = 24, neutrons = 24, electrons = 24 |
| | B) | protons = 24, neutrons = 28, electrons = 24 |
| | C) | protons = 24, neutrons = 28, electrons = 28 |
| | D) | protons = 28, neutrons = 52, electrons = 24 |
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7 | |
The symbol 3617Cl1- represents chlorine with 17 protons and |
| | A) | 16 electrons. |
| | B) | 17 electrons. |
| | C) | 18 electrons. |
| | D) | 19 electrons. |
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8 | |
Which is a correct Lewis structure for ozone?
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| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072410159/51616/2B10_1.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072410159/51616/2B10_2.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072410159/51616/2B10_3.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072410159/51616/2B10_4.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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9 | |
Diamond, graphite, and fullerenes (buckyballs), all forms of carbon, are examples of |
| | A) | catalysts. |
| | B) | isotopes. |
| | C) | structural isomers. |
| | D) | allotropes. |
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10 | |
Which statement comparing these two waves in the electromagnitic spectrum is correct?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072410159/51616/2B12.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>
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| | A) | Wave 1 has a longer wavelength, lower frequency, and travels at the same forward speed as Wave 2. |
| | B) | Wave 1 has a longer wavelength, lower frequency, and travels at a faster forward speed than Wave 2. |
| | C) | Wave 1 has a shorter wavelength, higher frequency, and travels at the same forward speed as Wave 2 |
| | D) | Wave 1 has a shorter wavelength, higher frequency, and travels at a slower forward speed than Wave 2. |
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11 | |
How many non-bonded electron pairs are there on the oxygen atom in the Lewis structure for carbon monoxide gas, CO? |
| | A) | four |
| | B) | three |
| | C) | two |
| | D) | one |
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12 | |
The Chapman cycle describes the natural formation and destruction of ozone in the atmosphere. Which statement is true? |
| | A) | Ozone is formed from an oxygen molecule and an oxygen atom; the latter was formed by the action of UV light. |
| | B) | Ozone is destroyed by reaction with atoms like H . or free radicals like HO .. |
| | C) | Ozone is destroyed by the absorption of an appropriate wavelength of infrared light. |
| | D) | Statements A and B are true. |
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13 | |
A certain brand of skin moisturizer advertises that it contains SPF 15 Sunscreen that protects from UVA and UVB rays. Why isn't UVC mentioned in its product claims? |
| | A) | UVC radiation is not absorbed by ozone, so it has no connection to the story of increased exposure to UV rays or ozone depletion. |
| | B) | UVC radiation is not as dangerous as is UVB radiation, so whether or not we are shielded from it does not matter. |
| | C) | UVC radiation is extremely dangerous, but it is completely absorbed in the upper atmosphere by oxygen, O2, as well as ozone, O3. |
| | D) | There is no need. UVC radiation is a natural part of the electromagnetic spectrum, so it only has the same potential for harm as visible light. |
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14 | |
HFCs are being developed to replace CFCs. Which of these compounds is a HFC? |
| | A) | CCl2F2 |
| | B) | CH3CFCl2 |
| | C) | CCl3CFCl2 |
| | D) | CF3CH2F |
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