A vehicle manufacturing company forms a plan to begin the production of vehicles with catalytic converters. Which is the best description of the regulation or program the company is trying to accommodate? A an effort set in place to stop public school bus drivers from running the engine when the vehicle is not in motion an effort set in place to allow the EPA to regulate emissions from motor vehicles in the United States C. an effort set in place to ensure that vehicles in the United States have an air pollution control device an effort set in place to encourage the manufacture of vehicles that have no emission control systems and no emissions from gasoline

A vehicle manufacturing company forms a plan to begin the production of vehicles with catalytic converters. Which is the best description of the regulation or program the company is trying to accommodate? A an effort set in place to stop public school bus drivers from running the engine when the vehicle is not in motion an effort set in place to allow the EPA to regulate emissions from motor vehicles in the United States C. an effort set in place to ensure that vehicles in the United States have an air pollution control device an effort set in place to encourage the manufacture of vehicles that have no emission control systems and no emissions from gasoline

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter9: Energy And Chemistry

Section: Chapter Questions

Problem 9.72PAE: 9.72 Although it can be a nuisance when a laptop computer freezes up and needs to be rebooted, we...

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An aqueous waste stream with a maximum concentration of 0.50 M H2SO4 (d = 1.030 g/mL at 25oC) is neutralized by controlled addition of 40% NaOH (d = 1.430 g/L) before it goes to the process sewer and then to the chemical plant waste treatment facility. A safety review finds that the waste stream could meet a small stream of an immiscible organic compound, which could form a flammable vapor in air at 40.oC. The maximum temperature reached by the NaOH solution and the waste stream is 31oC. Could the temperature increase due to the heat transferred by the neutralization cause the organic vapor to explode? Assume that the specific heat capacity of each solution is 4.184 J/g*K.
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Green Chemistry and Atom Economy The purposeful design of chemical products and processes that minimize the use of environmentally hazardous substances and the generation of waste is known as green chemistry. Green chemistry is a philosophical approach that is being applied to many areas of science and technology, and its practice is summarized by guidelines known as the “Twelve Principles of Green Chemistry” (see details at this website (http://openstaxcollege.org/l/16greenchem) ). One of the 12 principles is aimed specifically at maximizing the efficiency of processes for synthesizing chemical products. The atom economy of a process is a measureof this efficiency, defined as the percentage by mass of the final product of a synthesis relative to the masses of all the reactants used: atom economy = mass of product/mass of reactants × 100%Though the definition of atom economy at first glance appears very similar to that for percent yield, be aware that this property represents a…
Green Chemistry and Atom Economy The purposeful design of chemical products and processes that minimize the use of environmentally hazardous substances and the generation of waste is known as green chemistry. Green chemistry is a philosophical approach that is being applied to many areas of science and technology, and its practice is summarized by guidelines known as the “Twelve Principles of Green Chemistry” (see details at this website (http://openstaxcollege.org/l/16greenchem) ). One of the 12 principles is aimed specifically at maximizing the efficiency of processes for synthesizing chemical products. The atom economy of a process is a measureof this efficiency, defined as the percentage by mass of the final product of a synthesis relative to the masses of all the reactants used: atom economy = mass of product/mass of reactants × 100%Though the definition of atom economy at first glance appears very similar to that for percent yield, be aware that this property represents a…
Thermodynamics Quantities for Selected Substances at 298.15 K (25⁰C) Substance ∆H⁰f (kJ/mol) ∆G⁰f (kJ/mol) S (J/K-mol) Carbon C2H2(g) 226.7 209.2 200.8 CO2(g) -393.5 -394.4 213.6 Hydrogen H2(g) 0 0 130.58 Oxygen O2(g) 0 0 205.0 H2O(l) -285.83 -237.13 69.91 What is the ∆S⁰ in the combustion of ethane in the presence of excess oxygen yields carbon dioxide and water: 2C2H2(g) + 7O2(g) → 4CO2(g) + 6H2O(l) in J/K?
Use the data provided below to estimate (a) the temperature at which CaCO3 decomposes spontaneously assuming ΔrH and ΔrS remain unchanged at the temperature region of interest. CaCO3 (s) --> CaO (s) + CO2 (g) ΔfHo -1207 -635 -394 kJ mol-1 Smo 93 40 214 J K-1 mol-1 Tspont. >= ________ K. 3 s.f.
What do you understand by rate limiting step? please provide its significance in case of running a chemical industry that produces highly demanded ‘consumer products’ and also do highlight the methodology how to make the above mentioned step faster.
9.72 Although it can be a nuisance when a laptop computer freezes up and needs to be rebooted, we accept that as somewhat inevitable. But clearly the need to occasionally reboot the control system for the power grid would not be acceptable. Use the web to research ways that engineers ensure the reliability of crucial systems like the control infrastructure of the grid, and write a paragraph summarizing the main strategies employed.
Consider the industrial process ethylbenzene is produced by alkylation process.Prepare its flow diagram. Apply the knowledge of Thermodynamics-1 and 2 to study this process. Put your concluding remarks.
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At 298K, NH4NO3 readily dissolves in water, suggesting that the change in free energy (ΔG) favors the dissolution process. However, when NH4NO3 dissolves in water, the temperature of the water decreases. The particulate diagram above attempts to provide a microscopic view of the dissolution of NH4NO3(s) considering both the change in enthalpy (ΔH) and the change in entropy (ΔS). Which of the following explains what the particle diagram is able to illustrate and why? (see attached image) a.) The particle diagram is able to illustrate that the ΔH for the dissolution of NH4NO3 is exothermic because overcoming the attractive forces between the ions requires the absorption of energy. b.) The particle diagram is able to illustrate that the ΔH for the dissolution of NH4NO3 is endothermic because forming new interactions between the ions and the water molecules releases energy. c.) The particle diagram is able to illustrate that entropy increases when NH4NO3(s) dissolves in water…