When a CFC is broken down, the chlorine generated is a free radical, which has an unpaired electron and is highly reactive. It is sometimes shown as Cl. This chlorine can react with ozone by the following reaction CI + 03 > CIO + 02 The CIO is also highly reactive and can itself react with an oxygen free radical in the atmosphere: 0 + CIO → CI + 02 After these two reactions occur, a chlorine-free radical is regenerated. What can it then do in the atmosphere? Why are chlorofluorocarbons so damaging because of this?

When a CFC is broken down, the chlorine generated is a free radical, which has an unpaired electron and is highly reactive. It is sometimes shown as Cl. This chlorine can react with ozone by the following reaction CI + 03 > CIO + 02 The CIO is also highly reactive and can itself react with an oxygen free radical in the atmosphere: 0 + CIO → CI + 02 After these two reactions occur, a chlorine-free radical is regenerated. What can it then do in the atmosphere? Why are chlorofluorocarbons so damaging because of this?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

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Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.23QAP

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c. Plutonium-238 is used in spacecraft to provide heat to power generators. One of thesegenerators contained 765 g of plutonium-238 when it was manufactured. Given that thehalf-life of plutonium-238 is 87.7 years, calculate the mass of plutonium-238 remainingafter 350.0 years.
Plutonium-238 is used in spacecraft to provide heat to power generators. One of thesegenerators contained 765 g of plutonium-238 when it was manufactured. Given that thehalf-life of plutonium-238 is 87.7 years, calculate the mass of plutonium-238 remainingafter 350.0 years.
The average mass of an oxygen atom is 5.3x10^-26 kg. Calculate the kinetic energy of a mole of oxygen atoms, all moving at a speed of 400 m/s (1000 mph)
suppose there was a release of 0.572 mole of particle A and 0.792 mole of particle B and both particles are accelerated to 5.73 MeV. What is the energy in terms of kJ/mole for both particle A and B? Hint: 1 MeV = 1 x 10^6 eV and 1 eV = 1.602 x 10^-19 J and 1 kJ = 1000 J, and finally in 1 mole there are Avogrado's number of particles which is 6.02314 x 10^23 Also what is the energy for particle b
Which of the following matches the given data? 13C: δ 183, 164, 162, 160, 157, 155, 153, 52, 20 1H: δ 10.21 (s, 1H), 7.92 (d, 1H), 7.83 (dd, 1H), 7.80 (dd, 1H), 7.30 (d, 1H) 4.32 (q, 2H), 1.53 (t, 3H)
Scientists can determine the age of ancient objects by a method called radiocarbondating. The bombardment of the upper atmosphere by cosmic rays converts bitrogen toa radioactive isotope of carbon, C-14, with a half-life of about 5730 years. Vegetationabsorbs carbon dioxide through the atmosphere and animal life assimilates C-14 throughfood chains. When a plant or animal dies it stops replacing its carbon and the amount ofC-14 begins to decrease through radioactive decay. Therefore, the level of radioactivitymust also exponentially decay. A parchment fragment was discovered that had about74% as much C-14 radioactivity as does plant material on the earth today. Estimate theage of the parchment.
ΔGof (kJ/mol) of CO2(g) = -394.4ΔGof (kJ/mol) of H2(g) = 0ΔGof (kJ/mol) of CO (g) = -137.2ΔGof (kJ/mol) of H20 (g) = -228.6 ΔG°rxn = ΔG°f (products) - ΔG°f (reactants) Thank you!
2NaHCO3(s)--> Na2CO3(s)+CO2(g) +H2O(l) When 30.0 g NaHCO3 decomposes, the change in energy is-23.1 kJ. Use this information and the additional information provided to calculate the ΔH°f of NaHCO3. Substance ΔH°f (kJ/mol) H2O(l) –286 CO2(g) –394 Na2CO3(s) –1131 ΔH°f of NaHCO3 ___kJ/mol ?
A nuclear power plant operates by using the energy released in nuclear fission to convert liquid water at Tc into steam at Th. How much water could theoretically be converted to steam by the complete fissioning of a mass m of 235U if the energy released per fission event is E?
The total volume of hydrogen gas needed to the Hindenburg was 2.00 * 10 ^ 8 * d * m ^ 3 atm and 25 degrees * C How much energy was evolved when it bumed ? H 2(g) +1/2O 2(g) =-> H 2 O (l) AH = -296 kJ
For the following reaction, what is the energy released, in GJ/mol? (1 GJ = 1E9 J) Use 2.998E8 m/s as the speed of light 1 a m u has a mass of 1.6605E-27 kg A + 1n → C + D A n C D mass (amu) 6.1679 1.0087 3.0792 4.0358
7.86 Nitrogen triiodide, NI3(s) , is unstable and will spontaneously detonate to form a bright purple cloud of nitrogen and iodine gases accompanied with a loud ‘bang,” which suggests a release of energy. Considering the bonds involved, explain why this reaction is energy.

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