Chemistry In Context
9th Edition
ISBN: 9781259638145
Author: Fahlman, Bradley D., Purvis-roberts, Kathleen, Kirk, John S., Bentley, Anne K., Daubenmire, Patrick L., ELLIS, Jamie P., Mury, Michael T., American Chemical Society
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 4, Problem 20Q
Consider Figure 4.4.
- a. Which sector has the highest CO2 emission from fossil fuel combustion?
- b. What alternatives exist for each of the major sectors of CO2 emissions?
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Students have asked these similar questions
During photosynthesis, plants convert carbon dioxide and water to glucose (C6H12O6) and oxygen gas. a. Is photosynthesis a source or a sink of a GHG? Explain. b. Write and balance the chemical equation for the photosynthesis c. It is estimated that the amount of CO2 sequestered (removed from the air) by an urban tree is 60.0 kg.4 How much glucose can be produced from 60.0 kg CO2 during photosynthesis?
19. The chemical equation for photosynthesis is
_CO2 (g) + _H₂O (1)→ __C6H1206 (s) +
(C6H12O6 is glucose, the simplest sugar)
a. Balance the chemical equation above by filling in the blanks.
b. According to onetreeplanted.org, the average tree (across all climates and sizes) removes 10 kg of
carbon dioxide from the atmosphere every year. Based on this, what mass of glucose is produced
annually by the average tree?
O2 (g)
c. Teak is a common species of tropical tree. The graph below shows the amount of CO₂ absorbed by teak
forests in tons of CO₂ per hectare of forest per year, according to the climate region where the forests
are found (dry = low rainfall, humid=high rainfall). Looking at your photosynthesis equation again, what
does this data suggest about which reactant is the limiting reactant for teak trees? Explain.
C Teak
Carbon sequestration rate (tons CO₂ ha -1yr -1)
10
10
20
Tropical
humid
Tropical
dry
Aboveground biomass,
0-20 years
Belowground biomass,
0 -20 years
5. It is estimated that the synthesis of ammonia requires up to 1% of the world's energy
production. If you think about all the things that require energy around us, 1% of world
energy is a huge amount to dedicate to a single process. This energy is not actually used
in the NH3 synthesis reaction shown in part 1, but required for the steam methane
reforming reaction that produces H₂(g) (an essential ingredient in the Haber Bosch
process). The steam methane reforming is the combination of two reactions:
Step 1 Reforming reaction: CH4(g) + H₂O(g) ⇒ CO(g) + 3H₂(g) K₁ = 0.981
Step 2 Water-Gas Shift reaction: CO(g) + H₂O(g) — CO₂(g) + H₂(g) K₂= 1.04
a. Write the overall reaction equation of steam methane reforming.
b. Calculate the overall Keq of steam methane reforming (both steps combined).
c. Methane is a fossil fuel product that is largely obtained through fracking processes in
the US. Alternatively, the Sabatier reaction is the synthesis of methane using CO2 and
H₂:
CO₂(g) + 4H₂(g) →…
Chapter 4 Solutions
Chemistry In Context
Ch. 4.1 - You Decide What Do You Know About the Big C? In...Ch. 4.1 - Prob. 4.3YTCh. 4.1 - Prob. 4.4YTCh. 4.1 - Skill Building Polyatomic Ions II Name each of...Ch. 4.1 - Prob. 4.6YTCh. 4.2 - Prob. 4.7YTCh. 4.2 - Prob. 4.8YTCh. 4.3 - Skill Building Isotopes of Nitrogen Nitrogen (N2)...Ch. 4.3 - You Decide Marshmallows and Pennies Avogadros...Ch. 4.3 - Skill Building Calculating the Mass of Atoms...
Ch. 4.4 - Prob. 4.12YTCh. 4.4 - Prob. 4.13YTCh. 4.4 - Prob. 4.14YTCh. 4.4 - You Decide Checking Carbon from Cars A...Ch. 4.5 - Skill Building Light from the Sun Refresher In...Ch. 4.5 - Prob. 4.17YTCh. 4.6 - You Decide Evaporating Coal Mines Writing in the...Ch. 4.6 - Prob. 4.19YTCh. 4.6 - Prob. 4.20YTCh. 4.6 - Prob. 4.21YTCh. 4.7 - Skill Building MethaneFlat or Tetrahedral? a. If...Ch. 4.7 - Prob. 4.23YTCh. 4.7 - Skill Building Predicting Molecular Shapes, Part 2...Ch. 4.8 - Skill Building How Will a Molecule Stretch? For...Ch. 4.8 - Scientific Practices Greenhouse Gas Spectra a. Use...Ch. 4.8 - Scientific Practices Greenhouse Gas Spectra We...Ch. 4.8 - Prob. 4.28YTCh. 4.9 - Prob. 4.29YTCh. 4.9 - Prob. 4.30YTCh. 4.9 - Prob. 4.31YTCh. 4.9 - Prob. 4.32YTCh. 4.9 - Prob. 4.33YTCh. 4.9 - Prob. 4.34YTCh. 4.9 - Prob. 4.35YTCh. 4.9 - Prob. 4.36YTCh. 4.9 - Prob. 4.37YTCh. 4.10 - Prob. 4.38YTCh. 4.10 - Prob. 4.39YTCh. 4.10 - Prob. 4.40YTCh. 4.10 - Prob. 4.41YTCh. 4.11 - For each of the conclusions presented in Table...Ch. 4.11 - Prob. 4.43YTCh. 4.11 - Prob. 4.44YTCh. 4.12 - Skill Building Footprint Calculations Investigate...Ch. 4.12 - Scientific Practices Your Personal Share of the...Ch. 4.12 - Prob. 4.47YTCh. 4.12 - Prob. 4.48YTCh. 4.12 - Prob. 4.49YTCh. 4.12 - Prob. 4.50YTCh. 4.12 - You Decide Climate Change Insurance? Mitigation of...Ch. 4.12 - Prob. 4.52YTCh. 4.12 - You Decide The Big Question Revisited Answer these...Ch. 4 - i. Earth has increased in temperature by 6 C (10.8...Ch. 4 - The chapter concluded with a quote from John...Ch. 4 - Prob. 2QCh. 4 - Prob. 3QCh. 4 - Prob. 5QCh. 4 - a. It is estimated that 29 megajoules per square...Ch. 4 - Consider Figure 4.23. a. How does the present...Ch. 4 - Understanding Earths energy balance is essential...Ch. 4 - Explain each of these observations. a. A car...Ch. 4 - Prob. 10QCh. 4 - Draw the Lewis structure and name the molecular...Ch. 4 - Draw the Lewis structure and name the molecular...Ch. 4 - a. Draw the Lewis structure for methanol (wood...Ch. 4 - a. Draw the Lewis structure for ethene (ethylene),...Ch. 4 - Prob. 15QCh. 4 - Prob. 16QCh. 4 - Prob. 17QCh. 4 - Prob. 18QCh. 4 - Termites possess enzymes that allow them to break...Ch. 4 - Consider Figure 4.4. a. Which sector has the...Ch. 4 - Silver has an atomic number of 47. a. Give the...Ch. 4 - Silver only has two naturally occurring isotopes:...Ch. 4 - a. Calculate the average mass in grams of an...Ch. 4 - Prob. 24QCh. 4 - Prob. 25QCh. 4 - The total mass of carbon in living systems is...Ch. 4 - Prob. 27QCh. 4 - Give the number of protons, neutrons, and...Ch. 4 - Give the symbol showing the atomic number and the...Ch. 4 - Prob. 30QCh. 4 - The Arctic has been called our canary in the coal...Ch. 4 - Do you think the comment made in the cartoon is...Ch. 4 - Prob. 33QCh. 4 - Prob. 34QCh. 4 - Over the last 20 years, about 120 billion tons of...Ch. 4 - Prob. 36QCh. 4 - Prob. 37QCh. 4 - Prob. 38QCh. 4 - Ethanol, C2H5OH, can be produced from sugars and...Ch. 4 - Prob. 40QCh. 4 - Prob. 41QCh. 4 - Prob. 42QCh. 4 - Prob. 43QCh. 4 - Prob. 44QCh. 4 - Prob. 45QCh. 4 - Prob. 46QCh. 4 - Prob. 47QCh. 4 - Prob. 48QCh. 4 - Former vice president Al Gore writes in his 2006...Ch. 4 - Prob. 50QCh. 4 - Prob. 51QCh. 4 - Data taken over time reveal an increase in CO2 in...Ch. 4 - In the energy industry, 1 standard cubic foot...Ch. 4 - Prob. 54QCh. 4 - A solar oven is a low-tech, low-cost device for...Ch. 4 - In 2005, the European Union adopted a...
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