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22 Terms
1
What are the sources of carbon on Earth?
Atmosphere
Carbonate-containing rocks, fossil fuels, soils
Plants, animals
Dissolved in surface
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2
\ What is the effect of the absorption of infrared energy on matter?
\
\n
It increases the vibration of chemical bonds
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3
\ Which of the following are ways that aerosols may affect climate?
\
\n Scattering incoming radiation
Nucleation of clouds
Absorbing incoming radiation
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4
\ Scientists have correlated average global temperature with atmospheric carbon dioxide levels for the last 160,000 years using ice cores from Antarctica. How is the carbon dioxide level determined?
\
By measuring the CO2 concentration in trapped air bubbles in the ice layers
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5
\ Scientists believe they know the average global temperature over the last 160,000 years. Which property of the ice core samples from Antarctica provides this information?
\
\n
The 1H/2H ratio
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6
\ Although carbon dioxide is the primary compound discussed with respect to global warming; of the common atmospheric components the global warming potential (GWP) of a carbon dioxide molecule is very low. Which statement best explains this pair of facts?
\
CO2 exists in relatively high concentrations
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7
\ The majority of N2O molecules in the atmosphere come from
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bacterial removal of nitrate ions (NO3−) from soil.
\ \
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8
\ The carbon cycle refers to the
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movement of carbon through living organisms, the atmosphere, the sea, and the earth.
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9
\ In their fifth and most recent report published in 2014, the vast majority of scientists agreed on several key points. Which of the following is NOT one of those points?
\
All of these choices were mentioned as key points
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10
\ Which country has the highest per capita emission of carbon dioxide?
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United States
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11
\ What, approximately, is the highest concentration of CO2 measured in the Earth’s atmosphere in modern times?
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400 ppm
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12
\ Although greenhouse gases likely account for the problem of global warming, they are also responsible for making earth habitable. What would be the temperature on earth in the absence of the effects of carbon dioxide and water?
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−18°C
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13
\ The ability of a molecule to absorb infrared radiation is measured with IR spectrometers, which report the frequency of light absorbed in units of cm¯1. Which explanation best describes this unit?
\
The number of wavelengths in 1 cm for a specific frequency of light
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14
Which substances are regulated by the Kyoto Protocol? \n \n i. argon \n ii. carbon dioxide \n iii. nitrogen \n iv. nitrous oxide \n v. sulfur hexafluoride
ii, iv, and v only
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15
\ Which atmospheric component does not contribute to global warming?
\
N2
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16
\ Neither N2 nor O2 are greenhouse gases because
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their overall electric charge distribution does not change when they vibrate.
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17
\ Calculate the mass of 25,000 molecules of nitrogen gas. (1 mole = 6.02 × 1023 molecules)
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1\.16 × 10−18 g
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18
\ The internationally accepted atomic mass standard is carbon-12 because this isotope
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was arbitrarily selected as a convenient standard.
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19
\ What is the mass of exactly 500 sulfur atoms?
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2\.66 × 10−20 g
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20
\ Calculate the mass of 2.50 × 104 molecules of nitrogen gas.
\
\n
1\.16 × 10−18 g
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21
\ Ethanol (C2H6O) is a common intoxicant and fuel produced from the fermentation of various grains. How many moles of ethanol are represented by 50.0 kg of ethanol?
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1\.09 × 103 mol
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22
\ Which one of the following compounds is considered to be a molecular compound?
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