Concept explainers
(a)
Interpretation:
The processes that add carbon atoms (in the form of
Concept Introduction:
Carbon cycle: It is a biogeochemical cycle, which shows the exchange of carbon atoms with the atmosphere of the Earth through a series of processes that interconvert carbon containing compounds.
(b)
Interpretation:
The processes that remove carbon atoms from the atmosphere have to be found.
Concept Introduction:
Carbon cycle: It is a biogeochemical cycle, which shows the exchange of carbon atoms with the atmosphere of the Earth through a series of processes that interconvert carbon containing compounds.
(c)
Interpretation:
The two largest reservoirs of carbon atoms are to be found.
Concept Introduction:
Reservoirs: Generally this term refers to the receiving sources of anything that is concerned about. So, reservoirs of carbon atoms mean the receiving sources of carbon atoms such as the several places from which the carbon atoms can be found.
(d)
Interpretation:
The parts of the carbon cycle that are most influenced by the activities of humans have to be found.
Concept Introduction:
Carbon cycle: It is a biogeochemical cycle, which shows the exchange of carbon atoms with the atmosphere of the Earth through a series of processes that interconvert carbon containing compounds.
(e)
Interpretation:
The reason for why figure 4.2 is called the carbon cycle has to be explained.
Concept Introduction:
Carbon cycle: It is a biogeochemical cycle, which shows the exchange of carbon atoms with the atmosphere of the Earth through a series of processes that interconvert carbon containing compounds.
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Chapter 4 Solutions
Chemistry In Context
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- Consider the decomposition of dinitrogen tetroxide, N2O4, to nitrogen dioxide, NO2: N2O4(g)2NO2(g) How would you expect the spontaneity of the reaction to behave with temperature change?arrow_forwardConsider the combustion (burning) of methane, CH4, in oxygen. CH4(g)+2O2(g)CO2(g)+2H2O(l) The heat of reaction at 77C and 1.00 atm is 885.5 kJ. What is the change in volume when 1.00 mol CH4 reacts with 2.00 mol O2? (You can ignore the volume of liquid water, which is insignificant compared with volumes of gases.) What is w for this change? Calculate U for the change indicated by the chemical equation.arrow_forward[Environmental Chemistry] Question: Draw a mind map of the Phosphorus cycle. Include what are the sources of phosphorus in the environment? How human influences the phosphorus cycle?arrow_forward
- Calculations ( Lab Data is Linked) 1. Determine the number of moles of hydrogen gas that was produced with the complete reaction of the magnesium metal with excess hydrochloric acid. 2. Using Dalton's Law of Partial Pressure and the vapor pressure of water, determine the partial pressure of dry hydrogen gas. 3. Using the ideal gas law based on the collection of dry hydrogen gas, calculate the value of ideal gas law constant, R.arrow_forwardCalculate G for the following reaction at 25C. Use data given in Tables 6.2 and 18.1. CH4(g)+2O2(g)CO2(g)+2H2O(g)arrow_forwardConsider the following potential-energy curves for two different reactions: a. Which reaction has a higher activation energy for the forward reaction? b. If both reactions were run at the same temperature and have the same orientation requirements to react, which one would have the larger rate constant? c. Are these reactions exothermic or endothermic?arrow_forward
- What is the energy change when the temperature of 12.8 grams of gaseous neon is decreased from 39.3 °C to 24.7 °C ?Answer: Joules. Submit Answerarrow_forwardHow many liters of chlorine gas, Cl2, can be obtained at 40C and 787 mmHg from 9.41 g of hydrogen chloride, HCl, according to the following equation? 2KMnO4(s)+16HCl(aq)8H2O(l)+2KCL(aq)+2MnCl2(aq)+5Cl2(g)arrow_forwardAn average American releases 14,515 kg of CO2 emissions into the atmosphere each year. A single mature tree absorbs 22.7 kg of CO2 per year. How many trees are needed to absorb the emissions of a single person? Calculations: Answer:arrow_forward
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