Global Warming Potential is a) a measure of the ability of a greenhouse gas to cause global warming. b) different for different gases, depending on how efficiently they absorb IR and how long they remain in the atmosphere. c) based on CO2, where all other greenhouse gases are rated relative to carbon dioxide. d) all of these

Global Warming Potential is a) a measure of the ability of a greenhouse gas to cause global warming. b) different for different gases, depending on how efficiently they absorb IR and how long they remain in the atmosphere. c) based on CO2, where all other greenhouse gases are rated relative to carbon dioxide. d) all of these

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter9: Energy For Today

Section: Chapter Questions

Problem 56E

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Consider the two space shuttle fuel reactions in Exercises 81 and 82. Which reaction produces more energy per kilogram of reactant mixture (stoichiometric amounts)? 81. The reusable booster rockets of the space shuttle use a mixture of aluminum and ammonium perchlorate as fuel. A possible reaction is 3Al(s)+3NH4ClO4(s)Al2O3(s)+AlCl3(s)+3NO(g)+6H2O(g) Calculate H for this reaction 82. The space shuttle Orbiter utilizes the oxidation of methylhydrazine by dinitrogen tetroxide for propulsion: 4N2H3CH3(l)+5N2O4(l)12H2O(g)+9N2(g)+4CO2(g) Calculate H for this reaction
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How is the addition of heat symbolized in a chemical equation? The addition of light energy?
Solar winds composed of free protons, electrons, and particles bombard Earth constantly, knocking gas molecules outof the atmosphere. In this way, Earth loses about 3.0 kg of mat-ter per second. It is estimated that the atmosphere will be gone inabout 50 billion years. Use this estimate to calculate (a) the mass(kg) of Earth’s atmosphere and (b) the amount (mol) of nitrogen,which makes up 75.5 mass % of the atmosphere.
One of the components of smog is ozone,O3, a colorless, toxic gas. It is a very strong oxidizing agent and causes respiratory illnesses. Ozone is produced in the lower atmosphere due to the catalytic effect of nitric oxide, NO, a byproduct of the combustion process in car engines. However, in the upper atmosphere ozone is a very useful gas, because it absorbs ultraviolet radiation and protects the earth from this high energy, damaging radiation. It is referred to as the ozone layer. This ozone layer is depleted by the catalytic action of gases like Freon, which are commonly used in refrigerators and air conditioners. Chemically these gases are unreactive and rise into the upper atmosphere. The high energy radiation in the upper atmosphere produces very reactive chlorine atoms according to the reaction below: CCl2F2(g) → CClF2(g) + Cl(g) (catalyzed by uv radiation)The following questions refer to the depletion of ozone in the upper atmosphere according to the mechanism shown below:…
Be sure to answer all parts. Nitroglycerin (C;H;N3O9) is a powerful explosive. Its decomposition may be represented by 4C H;N3O9 6N2 + 12CO, +10H,0 02 This reaction generates a large amount of heat and gaseous products. It is the sudden formation of these gases, together with their rapid expansion, that produces the explosion. (a) What is the maximum amount of O, in grams that can be obtained from 8.00 x 10 g of nitroglycerin? (b) Calculate the percent vield in this reaction if the amount of O, generated is found to be 26.3 g. 0/0
2. NITROGEN MOLECULES It is difficult to think that some good things come from the powerful bust of electrical energy. During thunderstorms, the nitrogen and oxygen from the air react to form oxides of nitrogen. These oxides dissolve in the rain and are absorbed by the soil, fertilized with nitrogen. According to studies, more than 50% of usable nitrogen is generated from the atmosphere in this process. Explain the process that happens to nitrogen and oxygen during a thunderstorm in terms of chemical bonding. What is the benefit of this bond? (P) 3. ALLOYS Metal alloys are created through metallic bonding. Two examples of alloys are brass (zinc and copper) and steel (carbon and iron). Metallic bonding is utilized for its conductive properties to help transfer electricity throughout a house via copper wiring. Metallic bonds also exist between cast iron, which is made up of iron and carbon, bronze (Cu &Sn), stainless steel (Fe, Cr, C, In), and so on. It is used mostly to improve the…
Consider the combustion reaction for octane (C,H3), which is a primary component of gasoline. 18 2 С,Н8 + 250, → 16 CO, + 18 H,0 How many moles of CO, are emitted into the atmosphere when 19.6 g C,H3 is burned? 8. 18 CO, emitted: mol CO2 privacy policy terms of use contact us help about us careers MacBook Air
D -eq M 2req M M M M M ball & stick + labels v - A model for the compound 2-propanol is shown. calor assignment-take [Review Topics] [References] Use the References to access important values if needed for this question. Write a balanced chemical equation that shows the formation of 2-propanol from the elements carbon (C), hydrogen (H₂), and oxygen (02). Submit Answer (Use the smallest integer coefficients possible and do not include states. Enter the elements in the order: C, H, then O in the product box.) + + - Retry Entire Group 1 more group attempt remaining Cengage Learning | Cengage Technical Support Previous Email Instructor Next> Save and Exit
Mercury is an environmental pollutant because it can be converted by certain bacteria into the very poisonous substance dimethyl mercury, (CH3)2Hg. This compound ends up in the food chain and accumulates in the tissues of aquatic organisms, particularly fish, which renders them unsafe to eat. It is estimated that in the United States, 266 tons of mercury are released into the atmosphere each year. If only 1.4 percent of this mercury is eventually changed to (CH3)2Hg, how many pounds of this compound are formed annually?