Stelco has been recently legislated to reduce total SO2 emissions from iron smelting operations. Select the most effective chemical reagent to desulfurize Stelco’s gas emissions as a strategy to minimize the environmental impact of acid rain in eastern Canada and

33,861 results
  1. History

    What were the effects of the Zhou metal workers mastering iron? Select the two correct answers. A. The Zhou conquered the warlords and were the first to unify China. B. Iron made stronger, more effective farm tools and increased crop yield. C. Iron weapons

  2. chemistry

    what is thbe total number of molecules of so2 in a 0.10 mole same of so2

  3. Chemistry

    The specfic heat of iron is 0.11cal/g C. The heat of fusion of iron, the heat required to convert iron from a solid to liquid at its melting point, is 63.7cal/g. Iron melts at 1530 C. How much heat must be added to 2g of iron at 25c to completely melt it?

  4. Microeconomics

    Correcting for negative externalities - Regulation versus tradablepermits Suppose the government wants to reduce the total pollution emitted by three local firms. Currently, each firm is creating 4 units of pollution in the area, for a total of 12

  5. Chemistry

    Sulfur dioxide is used to make sulfuric acid. one method of producing it is by roasting mineral sulfides, for example, FeS2(s) + O2 (g) ---> SO2(g) + Fe2O3(s) (unbalanced). A production error leads to the sulfide being placed in a 950-L vessel with

  6. Chemistry

    Consider the following mixture of SO2(g) and O2(g).If SO2(g) and O2(g) react to form SO3(g),draw a representation of the product mixture assuming the reaction goes to completion. What is the limiting reactant in the reaction? If 96.0 g of SO2 reacts with

  7. chemistry 112

    the formation of SO3 from so2 and o2 is an intermediate step in the manufacture of sulfuric acid, and it is also responsible for the acid rain phenomenon. the equilibrium constant Kp for the reaction is 0.13 at 830 degree celcius. in one experiment, 2.00

  8. chem help

    the primary visible emissions from mercury are 404.7 nm and 435.8 nm. Calculate the frequencies for these emissions. Calculate the energy of a single photon and of a mole of photons of light with each of these wavelengths.

  9. statistics/Help Please!!

    In a sample of seven cars, each car was tested for nitrogen-oxide emissions (in grams per mile) and the following results were obtained:0.18, 0.12, 0.05, 0.19, 0.18,0.13, 0.15. Assuming that this sample is representative of the cars in use, construct a 98%

  10. chemistry

    is motor oil a homogeneous mixture or a compound? why? is iron smelting a chemical or physical process? I call oil a homogeneous mixture. Look up the definition of a mixture and the definition of a compound. Motor oil contains a number of different "oils"

  11. Statistics

    The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in automobiles by using magnetic free energy to increase the amount of oxygen in the fuel for greater combustion efficiency. Following are

  12. AP Chemistry

    The normal boiling points of CO and SO2 are -192 degrees C and -10 degrees C, respectively A) At 25 degrees C and 1 atm, which gas would you expect to have a molar volume closest to the ideal value? B) If you reduce the deviation from ideal gas behavior,

  13. chemistry

    Which of the following is an advantage to SMRs? (Select all that apply.) use fusion instead of fission reduce cost less atmospheric emissions reduce construction time

  14. chemistry

    Which of the following is an advantage to SMRs? (Select all that apply.) use fusion instead of fission reduce cost less atmospheric emissions reduce construction time

  15. statistics

    Burning fuels in power plants or motor vehicles emit carbon dioxide, which contributes to global warming. Table 1.3 displays CO2 emissions per person from countries with populations of at least 20 mil. Why do you think we choose to measure emissions per

  16. Chemistry

    Step 1: Carbon is burned in a limited supply of oxygen to form carbon monoxide. Step 2: The carbon monoxide formed in Step 1 is used to reduce iron(III) oxide to metallic iron and carbon dioxide. Calculate the mass (in kg) of O2 needed to produce 100 kg of

  17. Math

    Perform the indicated operations. Reduce the answers to lowest terms.... 1.) 7 3/5 + 2 4/7 = _______________ 2.) 8 5/9 + 15 5/6 =________________ 3.) 14 5/10 + 8 3/5 = ________________ 4.) 5/6 x 3/4 = _____________________ Reduce each fraction to lowest

  18. Astronomy

    Rank the following hypothetical planets -- all of which have the same total mass and same radius -- from lowest moment of inertia to highest moment of inertia: 1) A uniform sphere of mixed up rock and iron 2) A hollow sphere 3) A rocky planet with an iron

  19. Social Studies

    Study the graph. A graph shows the number of carbon emissions in Scandinavia. Emissions are shown in metric ton. In Denmark, there were 8 in 2009 and a little over 8 in 2010. In Finland, there were 10 in 2009 and a little over 11 in 2010. In Iceland, there

  20. Chemistry

    Sulfur dioxide (SO2) is an unwelcome result of burning soft coal in power plants. Some of the SO2 ends up as sulfuric acid in acid precipitation. The net reaction is 2 SO2(g) + O2(g) + 2 H2O(ℓ) −→ 2 H2SO4(ℓ) What mass in grams of SO2 is needed to

  21. speed of light

    Can the speed of light be legislated? Explain your reasoning. As best as we know, the speed of light is a fundamental constant of the universe. I have no idea of the meaning "legislated". Someday they may pass laws and light will have to slow down. After

  22. Chemistry

    EQUILIBRIUM: Given the equation 2 PbS(s) + 3 O2(g) 2 PbO(s) + 2 SO2(g) What direction will the reaction proceed if additional SO2 was added to the system at equilibrium? Forward Reverse Nothing Happens Difficult to determine You really need to do this

  23. science

    As the United States is one of the largest contributors to atmospheric carbon emissions, what specific policies might the United States enact to reduce its impact on global climate change? Using at least two scholarly or reputable resources and your

  24. Chemistry

    Stelco has been recently legislated to reduce total SO2 emissions from iron smelting operations. Select the most effective chemical reagent to desulfurize Stelco’s gas emissions a. CaCO3 b. CO2 c. HClO4 d. HI e. H2SO4 I believe the answer is A but I'm

  25. college algebra

    Are total emissions or per-capita emissions a better gauge when comparing the CO2 emissions of various countries? Why?

  26. Social Studies

    Which human activity would best support global efforts to improve the environment and to reduce global warming? a. driving a pickup truck across the countryside b. riding a bicycle to a nearby playground*** c. purchasing a SUV from a nearby dealership d.

  27. chemistry

    When anhydrous iron sulfate decomposes it forms iron (III) oxide, sulfur (IV) dioxide and sulfer (VI) oxide. Write a balanced equation for this reaction. My answer is this: FeSO4 ----> Fe2O3 + SO2 + SO3 Is that right?

  28. chemistry

    equal masses of so2 and o2 are kept in a vessel at 27 degrees celcius. the total pressure of the mixture is 2.1atm. the partial pressure of so2 is

  29. Math

    For each 10-degree adjustment on your water heater thermostat, you can reduce carbon dioxide emissions by 500 pounds a year. By how many pounds will you reduce your carbon dioxide footprint if you turn down your water heater thermostat from 140¢ªF to

  30. chemistry

    Iron metal CANT reduce Fe3+ to Fe2+. Why?

  31. Chemistry

    I looked and could not find anything on iron smelting? Could you explain to me why it is a chemical process? Iron ore is a chemical compound, it has to be decomposed into iron + other. Surely you jest!!! I went to www.google.com and typed in Iron smelting

  32. Chemistry Question

    The reaction of quicklime (CaO) with sulfur dioxide (SO2) is an important reaction for reducing SO2 emissions from coal-fired power plants: CaO(s) + SO2(g) → CaSO3(s) This reaction is an example of: A. a precipitation reaction B. an electrolysis reaction

  33. Statistics help please!!!

    The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in automobiles by using magnetic free energy to increase the amount of oxygen in the fuel for greater combustion efficiency. Following are

  34. Technology

    Short answer question: #22. Describe the three steps required to make steel. My answer: There are three steps required to make steel, which include: Iron smelting, Steelmaking, and Steel finishing. The first step, iron smelting, produces pig iron which is

  35. biology

    How would a reduction of carbon dioxide emissions affect the oceans? Select the two correct answers. 1. It would reduce ocean temperatures. 2. It would increase ocean temperatures. 3. It would lower the pH of the oceans. 4. It would raise the pH of the

  36. college algebra

    Country CO2 Emissions (tons of carbon dioxide) 2012 population  Emissions per Capita  China 8,782,000,000 1,359,750,000    United States 5,144,000,000 316,597,000   India 2,185,000,000 1,233,460,000  Russia  1,646,000,000

  37. chemistry

    (You may have seen this before) A crude oil burned in electrical generating plants contains about 1.2% sulfur by mass. When the oil burns, the sulfur forms sulfur dioxide gas: S(s) + O2(g) -------> SO2(g) How many liters of SO2 (d = 2.60 g/L) are produced

  38. chemistry

    What happens to the concentration of SO2(g) when the total pressure on the equilibrium reaction 2 SO2(g) + O2(g) 2 SO3(g) is increased (by compression)? I thought it remained the same but that was incorrect.

  39. Science

    I need to identify ways to reduce forms of pollution that my classmate put in their paper. Iron sulfide and coal seam was mentioned and how they react when exposed to air and water in the mining process, as well as form a mix of acid, sulfates, and metals

  40. Chemistry

    Iron pyrite (FeS2) is the form in which much of the sulfur exists in coal. In the combustion of coal, oxygen reacts with iron pyrite to produce iron(III) oxide and sulfur dioxide, which is a major source of air pollution and a substantial contributor to

  41. Chemistry

    2 SO2 + O2 --> 2 SO3 What happens to the total volume when 3L of SO2 react with 2L of O2 to form the max. amount of SO3 possible?

  42. Water-Treatment

    a) Which five quality parameters of the raw water may not meet drinking water standards? Bacterial colony count (less than 100 cfu/ml) Ammonium (less than 0.2 mg/l) Nitrite (less than 0.1 mg/l) Nitrate (less than 50 mg/l) Iron (less than 200 µg/l)

  43. Water Treatment

    a) Which five quality parameters of the raw water may not meet drinking water standards? Bacterial colony count (less than 100 cfu/ml) Ammonium (less than 0.2 mg/l) Nitrite (less than 0.1 mg/l) Nitrate (less than 50 mg/l) Iron (less than 200 µg/l)

  44. Water Treatment

    a) Which five quality parameters of the raw water may not meet drinking water standards? Bacterial colony count (less than 100 cfu/ml) Ammonium (less than 0.2 mg/l) Nitrite (less than 0.1 mg/l) Nitrate (less than 50 mg/l) Iron (less than 200 µg/l)

  45. Math for Management

    A hospital performs 3 types of operations. The first type takes 30 minutes, and they charge $1000 for it. The second type takes 1 hour, and they charge $1500 for it. The third operation takes 2 hours, and they charge $2000 for it. The hospital can schedule

  46. chemistry. please help drbob222

    One of the reactions involved in the smelting of copper sulfide ores involves copper (I) oxide and copper (I) sulfide: 2Cu2O2 + Cu2S ---> 6Cu + SO2 Assuming that 35.00 g of copper (I) oxide is heated with 25.00 g of copper (I) sulfide A) determine which

  47. chemistry

    One of the reactions involved in the smelting of copper sulfide ores involves copper(I) oxide and copper (I) sulfide: 2Cu2O(solid) + Cu2S(solid) ---> 6Cu(solid) + SO2(gas) Assuming that 35.00 g of copper (I) oxide is heated with 25.00 g of copper (I)

  48. Geo 7th Grade

    To help reduce air pollutions legislation had been passed a. stating that all vehicles made after 2015 must contain hybrid engines. b. banning the use of any items that cause smog. c. limiting automobile gas emissions, d. requiring all households to have

  49. Science - chemistry

    The SO2 present in air is mainly responsible for the phenomenon of acid rain. The concentration of SO2 can be determined by titration against a permanganate solution of known concentration as follows: SO2 + MnO4^-1 -> SO4^-2 + Mn2+ (unbalanced) Balance the

  50. P. Chemistry

    The equilibrium 2 SO2(g) + O2(g) 2 SO3(g) has the value K = 2.5 1010 at 500. K. Find the value of K for each of the following reactions at the same temperature. (a) SO2(g) + 1/2 O2(g) SO3(g) K = (b) SO3(g) SO2(g) + 1/2 O2(g) K = (c) 3 SO2(g) + 3/2 O2(g) 3

  51. AP CHEM

    19. Burning coal and oil in a power plant produces pollutants such as sulfur dioxide, SO2. The sulfur-containing compound can be removed from other waste gases, however, by the following reaction: 2 SO2(g) + 2 CaCO3(s) + O2(g)  2 CaSO4(s) + 2 CO2(g)

  52. Physics

    (a) CO2 emissions C from a nation’s energy system can be expressed as: C = Population x Energy consumption per person x CO2 emissions per unit of energy consumption. Initially, total emissions are 600 million tonnes of CO2 per year. If, over a 50-year

  53. Chemistry

    Stelco has been recently legislated to reduce total SO2 emissions from iron smelting operations. Select the most effective chemical reagent to desulfurize Stelco’s gas emissions as a strategy to minimize the environmental impact of acid rain in eastern

  54. chemistry

    you are hired as an environmental consultant at Stelco Inc., one of the largest steel manufacturer’s in Canada. Stelco has been recently legislated to reduce total SO2 emissions from iron smelting operations. Select the most effective chemical reagent to

  55. chemistry

    Stelco has been recently legislated to reduce total SO2 emissions from iron smelting operations. Select the most effective chemical reagent to desulfurize Stelco’s gas emissions as a strategy to minimize the environmental impact of acid rain in eastern

  56. Chemistry

    Why is iron smelting a physical process? I didn't know it was. Go to www.google.com and type in iron smelting. Read one or more of the articles. You don't need to read but a few lines to learn what you need to know.

  57. economics

    1.What two policies could you use to reduce the total amount of emissions? 2.Why do you think they each would work?

  58. Geography

    The Harper government faced a grilling from global climate officials Thursday, as countries’ representatives questioned Canada’s policies and commitment to reduce greenhouse gas emissions. Canada’s chief negotiator Louise Metivier presented

  59. Math

    The cost-benefit equation T=-0.623-194 In (1-p) describes the approximate tax T, in dollars per ton, that would result in a p% (in decimal form) reduction in carbon dioxide emissions. What tax will reduce emissions 70%?

  60. ecom

    Sometimes market activities (production, buying, and selling) have unintended positive or negative effects outside the market's scope. These are called externalities. As a policy maker concerned with correcting the effects of gases and particulates emitted

  61. Chemistry

    A gas sample containing only SO2, PF3 and SF6 has the following mass percent composition: 30.4% SO2 and 28.4% PF3. Calculate the partial pressure (atm) of SO2 if the total pressure of the sample is 676.4 torr. I tried taking the total pressure in atm and

  62. math

    how much oxygen is required to convert total so2 into so3 tell me the percentage ratio of so2:o2 the reaction is so2+1/2o2=so3

  63. Social Studies

    Can someone check this question to see if I got it right please? How has the United Kingdom reduced air pollution? Select all that apply. A. it has developed new technologies to reduce pollution. B. it has eliminated all use of fossil fuels. C. it has

  64. Africa

    what is a key technological that began around 500 bce?in the sub saharan africa? a.yam civilization b.iron smelting c.writing d.monumental archetecture please help- playing a world game with my sis!

  65. Chemistry

    A sample of iron(II) sulfate was heated in an evacuated container to 920 K, where the following reactions occurred. Reaction (a): 2 FeSO4(s)--> Fe2O3(s) + SO3(g) + SO2(g) Reaction (b): SO3(g)--> SO2(g) + 1/2 O2(g) After equilibrium was reached, the total

  66. Social Studies

    How has the United Kingdom reduced air pollution? Select all that apply.(2 points) 1. It has developed new technologies to reduce pollution. 2. It has eliminated all use of fossil fuels. 3. It has eliminated all vehicle emissions. 4. It has invested in

  67. Chemistry<--------

    Sulfur dioxide in the effluent gases from coal-burning electric power plants is one of the principal causes of acid rain. One method for reducing SO2 emissions involves partial reduction ofSO2 to H2S followed by catalytic conversion of the H2S and the

  68. Science

    What is one way you could take action to reduce your carbon dioxide emissions?

  69. science

    how can we reduce trash in our school What Can You Tell Me About Iron And Sulphur? My B F Is Stacey!! It would be more effective to present your question using the link. Since this is not my area of expertise, I searched Google under the key words "iron

  70. Economics

    What is a carbon tax? Who would implement it and how does it work to reduce greenhouse gas emissions? Explain.

  71. math

    I am confuse at the following, please explain: a company employs a total of 527people, and 47 of these people work in the operations depart. Which of the following is a ratio that compares the number of people in the operations depart. to the total# of

  72. Chemistry

    When combining Ca(OH)2 with Na2CO3 it entraps SO2 out of a gas stream from kiln emissions where ore is processed into nodules. When there is not enough Na2CO3 in this combination, will it not allow the solids to form out and settle?

  73. life science

    1) outline the main problems associated with the greenhouse gases. 2) why fossil fuels referred as non renewable resources? 3) describe the strategies that could be implemented to reduce pollution and exploitation associated with fossil fuels 4) suggest

  74. math

    For eacg of the following , perform the given operations. Make sure to Reduce. a) 19/20 -5/8 + -7/10 b)24/40 ÷ (30/14)(25/63) c) (-24/25)(-25/-26)(-26/27)(-27/-28)(-28/29)(-29/-30)

  75. chemistry

    An equilibrium mixture of SO2,SO3 and O2 gases is maintained in a 11.5 L flask at a temp at which Kc=55.2 for the rxn: 2SO2 + O2 2SO3. If the # of moles of SO2 and SO3 are =, how many moles of O2 are present? I let SO2 and SO3 =x and O2=y. Since SO2 and

  76. Geography

    Ottawa replied that it will make “climate-related investments in innovative technologies” to improve environmental performance in the oil sands, a pledge Ms. Metivier reiterated Thursday. Ms. Metivier said many of the regulations imposed by the federal

  77. Biology

    What is the main cause of brown or photochemical smog? 1. emissions from aircrafts 2. aerosol cans and coolants 3. emissions from automobiles 4. coal-burning industries 5. river pollution through discharge of industrial wastes

  78. physics

    What is being done to reduce emissions from gasoline engines in automobiles? What more can be done in the future? Do you think gasoline engines will become a thing of the past?

  79. Chemistry

    For the teaction system, 2SO2(g) + O2(g) 2SO3(g), Kc has a value of 4.62 at 450.0K. A system, at equilibrium, has the following concentrations: [SO3] = 0.254 M, [O2] = .00855 M. What is the equilibrium concentration of SO2(g)? The correct answer is 1.28M,

  80. Math

    A cubic model of the yearly worldwide carbon emissions is W=-0.051x3 + 2.93x2 + 74.6x + 1589 where W is the weight of the emissions in millions of tons and x is the number of years since 1950. Use synthetic division to evaluate the model for the year 1960.

  81. chemistry

    the following reaction may be used to remove sulfur compounds from power plant smokestack emission. 2HS(g) + SO2 >>>> 3S + 2H2O ...... DELTA h = -145 KJ the value of the euilibrium constant for this reaction is 8.0*10^15 at 25 degree celsius. a). given the

  82. chemistry

    how many CO would be needed to reduce 19.1 grams of iron (III).

  83. rate of reaction (formatted repost)

    I can't get my table to line up so I've surrounded the values in curly brackets. Experiment [SO2]i [O2]i IRD O2 {1} {0.05} {0.05} {7.3*[10^(-2)]} {2} {0.10} {0.05} {2.9*[10^(-2)]} {3} {0.10} {0.15} {2.6*[10^(-1)]} {4} {0.12} {0.12} {?????????????} so

  84. SCIENCE

    1. An environmental engineer might (1 point) Create mathematical models of what may happen to global temperatures in the future. Build and maintain a marine exhibit for an aquarium. Help an oil finery reduce its toxic gas emissions. Stock a lake with

  85. Econ - help please

    demand for sulfur dioxide by coal-fired electricity electricity producers is: P= 1,000 - 16Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide. a)With no policies or restrictions on sulfur

  86. Finance

    Which of the following are good candidates for ascertaining the value effects with an event study, and why? 1. An acquirer wants to buy the firm. 2. The CEO dies 3. The CEO ages 4. Positive earnings surprise at the annual meeting 5. Purchase of a new

  87. MTH 156

    The ratio of the distances a 7-iron and a 5-iron will drive a golf ball is 5 to 6. If a golfer averages 153 yards with a 7-iron, how far should he average with a 5-iron

  88. Science

    What factors might cause my contribution of carbon dioxide emissions to deviate substantially from the US national average of approximately 20 tons? I used CO2 emissions from electricity, natural gas, my car, waste (& reducing by recycling), and taking a

  89. international to business

    As a Venezuelan business owner (you may select the specific business of your choice), you are very interested in the fact that Venezuela has recently been accepted as an associate member of MERCOSUR (July, 2004). You need to prepare your operations in view

  90. Math

    I'm trying to perform the indicated operations, and reduce to lowest terms, but I'm not sure if I got the correct answer. The question is y-5/(x^2+5x)+(xy+5y) + 1/x+y - 2/x+5....I got y-6, but am not sure if that is correct.

  91. math

    We define two numerical operations labelled T and R. The effect of T is to add 1 to a number. For example, if we apply the operation T to the number 2 three times in a row, we obtain 3, then 4, then 5. The effect of R is to find the negative reciprocal of

  92. chemistry

    A particular coal contains 2.55% sulfur by mass. When the coal is burned, it produces SO2 emissions which combine with rainwater to produce sulfuric acid. Determine how much sulfuric acid (in metric tons) is produced by the combustion of 1.1 metric ton of

  93. bus 100

    Operations Management" Please responds to the following: Review the major responsibilities of the operations manager and determine which responsibility is the most challenging. Assess and discuss your ability to succeed in this type of position. Discuss

  94. Chemistry

    I was wondering if you could help me with this problem. If the reaction proceeds with a 96.8% yield, how many kilograms of CaSO4 are formed when 5.34 kg SO2 reacts with an exfess of CaCO3 and O2? Thanks for your help. Write the equation for the reaction

  95. Science

    What is the Kyoto Protocol? a nuclear retention treaty to ensure stockpiling of nuclear arms an international treaty to endorse the invasion of Iraq in 2003 an agreement to reduce artificial emissions of CO2 gases a binding trade agreement entered into by

  96. MB0039

    Select and briefly describe two corporate ads that you have seen recently which you feel are effective. Explain how they benefit the company

  97. Math

    Perform the indicated operations and reduce all results to lowest terms. Assume the variables are restricted to values that prevent division by 0. (x^2-y^2)/(x^2-2xy+y^2) divided by (3x+3y)/(7x-21) Could someone please show me how to do this so I can do

  98. chemistry

    Solud iron and steam react at high temperatures to form iron(vi) peroxide and hydrogen gas. How much solid iron is needed to obtained 405 grams of iron(vi) peroxide, with a 84.2% yield?

  99. chemistry

    Solud iron and steam react at high temperatures to form iron(vi) peroxide and hydrogen gas. How much solid iron is needed to obtained 405 grams of iron(vi) peroxide, with a 84.2% yield?

  100. Physics help

    A blacksmith at a historical reenactment is making an iron hinge. after placing the iron (0.750 kg) in the fire and shaping it with his hammer it is still at 200 C. he puts the iron piece in an 8 L bucket of water at 25 C. what is the final temp. of the

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