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September 16, 2014

Search: chemistry - ozone

Number of results: 45,408

CHEM
Which answer best describes an O_3/ozone molecule: 1. Each atom in ozone is connected to another atom by 1.5 bonds. 2.The double bond in ozone switches back and forth between the two outer oxygen atoms. 3.An ozone molecule contains one single bond and one double bond. I want ...
November 26, 2007 by K

chemistry
hey everyone out there im new to this forum so please be nice. hahaha :D as the subject says this is about ozone cracking. well my friend is doing a research assignment, and shes talking about ozone cracking. she has done your homework and found out that ozone cracking, ...
October 16, 2008 by Anonymous

Chemistry 2
Chlorine atoms contribute to the destruction of the earth's ozone layer by the following sequence of reactions: Cl + O3 --> ClO + O2 ClO + O --> Cl + O2 Where the O atoms in the second step come from the decomposition of ozone by sunlight: O3 --> O + O2 What is the ...
June 28, 2012 by Robert

chemistry - ozone
hi, can anybody tell me the molecules that destroy ozone? i need a fair few molecules to write in my homework...thanks! The main species responsible for destroying ozone in the stratosphere is Cl atoms. Br atoms are also very effective but there aren't many around. Collisions ...
June 26, 2006 by harshini

chemistry
What are the chemicals that cause ozone depletion. Provide information on their structures, how they are made, and how they react with ozone in the stratosphere. Also describe where these chemicals are found in industry and in household products.
November 24, 2009 by Dhoni

Engineering
It is found that ozone reaction in water nearly follows first-order kinetics in ozone concentration decreases by 50% in 12 minutes (t1/2 = 12 min). A water supplier wants to inject ozone into a pipe bringing water to thee water treatment plant to pre-disinfect the influent. ...
September 19, 2011 by Jimmy

CHEMISTRY
When air pollution is high, ozone (O3) contents can reach 0.60 ppm (ie., .60 mol ozone per million mol air). How many molecules of ozone are present per liter of polluted air if the barometric pressure is 755 mm Hg and the temperature is 79 degrees F? I converted temperature ...
January 4, 2007 by Dave

chemistry
Free radicals are also important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the action of sunlight on air pollutants, is formed in part by the following two steps. X NO2 NO  O O  O2 O3 UV light  Ozone damages ...
March 20, 2011 by Kat

OZONE stuff
When is the Antarctica ozone hole expected to recover almost completely? How do you know this?
March 4, 2010 by ANNE, HELP!!!!!

physical science
what is the importance of ozone in the stratosphere for your health?what will happen to us when ozone depletion becomes more serious?
April 3, 2014 by comfort mohlola

Chemistry
The protective action of ozone in the atmosphere comes through ozone's absorption of UV radiation in the 230 to 290 nm wavelength range. What is the energy, in kilojoules per mole, associated with radiation in the wavelength range?
October 22, 2013 by Bobby

CHEMISTRY
The atmosphere contains about 6.81013 moles of ozone. If this amount of ozone gas is compressed into a thin layer around the globe (the radius of Earth is 6370 km) at STP (Standard Temperature (0C) and Pressure (1.0 atm.)), how thick will the layer be in millimeter? One ...
March 5, 2010 by HELP!!!!!

science
Ozone, a gas found in the upper stratosphere and lower mesosphere, would burn our throats if we tried to breathe it. ozone is composed of
August 24, 2010 by sean

Chemistry 105
Ozone is depleted in the stratosphere by chlorine from CF3Cl according to the following set of equations: CF3Cl+UV light-->CF3+Cl Cl+O3-->ClO+O2 O3+UV light-->O2+O ClO+O-->Cl+O2 What total volume of ozone measured at a pressure of 22.0 mmHg and a temperature of 220...
October 23, 2011 by JULIE

Chemistry Ozone layer
what is the ozone layer made out of because on differnt websites it says different things and i thought it was made out of the three types of oxygen O2 O3 and i dont know the last one but on other things it says differnt please help me
January 14, 2012 by Anonymous

Chemistry
how many moles of ozone does the atmosphere hold?
November 21, 2010 by Ben

science
1. Force exerted on an area is called _____. (1 point) pressure temperature gravity mass 2. The composition of the atmosphere is changing due to _____. (1 point) smog ozone depletion increase in CO2 (carbon dioxide) all of the above 3. The _____ is the layer of the atmosphere ...
September 26, 2012 by Delilah

Ecology
Aside from lead, the two air pollutants most hazardous to human health are: A. sulfur dioxide and carbon monoxide. B. ozone and sulfur dioxide. C. ozone and fine airborne particulates. D. nitrous oxides and carbon monoxide. is it A
July 31, 2014 by Amy

chemistry
I have absolutely no clue how to approach this question please help. The destruction of the ozone layer is an issue that is being discussed all around the world. Freons, or chlorinated hydrocarbon molecules, are very stable on the ground, but in the upper atmosphere, ...
February 25, 2010 by tina

chemistry
What is the chemical composition of ozone, carbon dioxide, salt and water
November 17, 2008 by Louis

Chemistry
True or false? 1 mole of ozone has 1.8 x 10^24 atoms? correct if wrong THANK YOU!
November 13, 2011 by Matt

AP Chemistry
What effect would a catalyst have on the rate of reaction for the decomposition of ozone?
October 11, 2012 by Corneil

chemistry
hi can someone please help me I need a detailed scientific article about ozone depletion thank you
August 11, 2009 by bill

Biology
29. CFCs are a problem because they a. have been released in large quantities in the past b. break down to reactive free chlorine atoms c. attack ozone molecules in the upper atmosphere d. all of the above D? 10. Ozone depletion in the atmosphere a. leads to the formation of ...
February 16, 2010 by mysterychicken

science
does anyone know what the effects of low level ozone is on animals and plants? Moderate to high levels of ozone causes respiratory problems in animals. it also slowly kills trees. This can be seen in portions of the San Bernardino Mountains affected by Los Angeles Basin smog. ...
September 10, 2006 by Eliza

Reaction Stiochiometry Involving Gases
Ozone is depleted in the stratosphere by chlorine from CF3Cl according to the following set of equations: CF3Cl + UV Light ---> CF3 + Cl Cl + O3 ---> ClO + O2 O3 + UV Light ---> O2 + O ClO + O ----> Cl + O2 What total volume of ozone measured at a pressure of 25.0 ...
October 25, 2009 by Kyle

Physics
A 32-u oxygen molecule (O2) moving in the +x direction at 580 m/s collides with an oxygen atom (mass 16 u) moving at 870 m/s at 27 degrees to the x axis. The particles stick together to form an ozone molecule. Find the velocity of the ozone. Express your answer in terms of the...
April 13, 2009 by Jacob

chemistry
three compounds A,B and C all have the formula C5H8. All three compounds will decolorize bromine in CCl4. Compound A reacts with NaNH2. Compounds A and B both yield pentane when they are treated with excess H2 with the pt catalyst. Under the same conditions C absorbs only 1 ...
June 7, 2011 by alli

CHEMISTRY
C12H20(Y)--> 22CH2=O+ 2CH3C(=O)CH2C(=O)CH3 The reagents used are ozone, Zn and H20 Give condensed formula of C12H20Y
November 12, 2007 by Delli

Chemistry
The standard enthalphies of formation of ozone, O3(g), and oxygen atoms are +142.70 and +249.17 kJ/mol. Calculate the reaction enthalpy for 2O2(g)-->O3(g)+O(g)
October 20, 2012 by Sam

chemistry
if from 3moles MgSO4.7H2O all the 'o' atoms are taken out and converted into ozone, find the number of O3 molecules formed.
June 17, 2014 by shish

Chemistry
One of the concerns about the use of Freons is that they will migrate to the upper atmosphere, where chlorine atoms can be generated by the following reaction: CCl2F2 --> CF2Cl + Cl Chlorine atoms can act as a catalyst for the destruction of ozone. The Activation energy for...
October 26, 2010 by Jim

chem
Can somebody help me please??? Ozone, O3 has a O-O-O connectivity. 1. Draw a lewis structure for ozone 2. Calculate the formal charge for each oxygen of ozone 3. Describe the shape of ozone http://coolspace.gsfc.nasa.gov/hawaii/lessons/introducing_ozone1.htm http://dbhs.wvusd....
September 1, 2005 by Nisar

Chemistry
Explain why different ozone depleting substances differ in terms of the length of time that elapses between their emission to the atmosphere and their release if catalytically active chlorine.
February 6, 2011 by Cassie

Chemistry
The decomposition of ozone is believed to occur in two steps O3 <==> O2 + O O3 + O ---> 2O2 Identify any reaction intermediate. What is the overall reacion? I got O3 + O3 --> O2 + 2O2
February 17, 2008 by Lauren

Chemistry
The decomposition of ozone is believed to occur in two steps O3 <==> O2 + O O3 + O ---> 2O2 Identify any reaction intermediate. What is the overall reacion? I got O3 + O3 --> O2 + 2O2
February 18, 2008 by Lauren

Integrated Physics and Chemistry
Some refrigerants used in air conditioners have been associated with.. A)somg B)destruction of the ozone layer C)thermal pollution D)power failures
April 18, 2011 by Ashley

Integrated Physics and Chemistry
Some refrigerants used in air conditioners have been associated with... A)smog B)destruction of the ozone layer C)thermal pollution D)power failures
April 21, 2011 by Ashley!!

Chemistry
I need help on how to calculate the following please: Calculate the risk assesment of the amount of the ozone in the air between the hours of 4pm and 6pm where I live(Corpus Christi,Texas)
August 27, 2011 by Jelly

science
What is the ozone
November 17, 2008 by carrie

Chemistry
The reaction describing the formation of ozone from oxygen is shown below. 3 O2(g) <--> 2 O3(g) Calculate Grxn at 288 K for this reaction in a flask where [O2] = 3.419 x 10-2 M and [O3] = 5.783 x 10-4 M. Assume G = 326 kJ. Use molarity to construct the reaction ...
January 2, 2012 by Summer

9th grade
how does ozone form?
September 22, 2008 by lc

science
Ozone layer formed
January 15, 2013 by abdulwasay

precalc
The depletion of the Earth's ozone layer has created concern among some health experts. They believe that dramatic increases in the number of illnesses and deaths due to ultraviolet radiation rays may occur as a result of breaks in the ozone layer. The Environmental Protection...
September 4, 2010 by Anonymous

Science
How does the ozone effect the wind patterns
January 22, 2008 by Ellen

Science
Why can't the ozone layer be higher in the atmosphere?
January 31, 2009 by Penny

science
what do the ozone and oxygen have in common?
September 29, 2010 by noelia

9th grade
What are the similarities of ozone depletion and uv light
March 8, 2010 by adriana

Physical Science
How does the ozone layer cause global warming?
June 7, 2010 by John Henry

environment chem
how many moles of ozone does the atmosphere hold?
November 21, 2010 by Ben

Help
How are oxygen and ozones alike? How are xyggen and ozone different?
December 8, 2010 by Please help

science
how does the thinning of the ozone layer protect your health?
January 30, 2012 by dina

science
How does ozone gas to int get into the earth?
March 9, 2014 by Kathleen

Chemistry
If the equilibirium reaction is 2 03(g) <--> 3 O2 9(g) is first order with respect to ozone, what type of plot( meaning what is plotted on the y axis vs what is plotted on the x-axis) will yield a straight line? what will the slope of the line represent? PLEASE help im ...
January 23, 2011 by Amber

science
Is there a relationship between ozone depletion and global warming?
May 11, 2008 by Charlotte

science
does methane have anything to do with ozone depletion? http://www.ciesin.columbia.edu/docs/011-466/011-466.html What Drainage basin does Michigan belong to? I have answered this one a couple of times already. Can I direct you to the statement in the conclusion in DrBob's ...
May 15, 2007 by Anonymous

science
hi can someone please help me What is the chemical reaction mechanism of ozone depletion thank you
August 14, 2009 by sam

college physics
the question is that what happened when the ozone layer becomes destroyed?
September 18, 2009 by neha

earth science
what makes scientists think that the ozone layer is disappearing?
February 13, 2011 by kristina reingand

Chemistry
Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and in the production of aluminum metal. It is prepared by the reaction below. CaF2 + H2SO4 CaSO4 + 2 HF In one process 9.00 kg of CaF2 are treated with an excess of H2SO4 and ...
August 7, 2012 by Shawn

social studies
can you give little information about antartic ozone hole
November 23, 2008 by tushar das

Soil Chemistry
Understanding the strengths of carbon halogen bonds can help us to understand the behavior of CFCs and related molecules. Arrange the members of the set of carbon halogen bonds shown below in the order of bond strength. A) carbon dioxide B) methane C) ozone D) water A) c > ...
July 6, 2014 by John

science
Issue Sources Health/Environmental Effects Carbon dioxide (CO2) Chlorofluorocarbons (CFCs) Ground-level ozone (O3) Sulfuric acid (H2SO4) I need to complete the table above and have no idea what to do. Choose one of the following atmospheric issues: air pollution, global ...
September 13, 2008 by Angel

Environmental Science
Nonliving and living factors that contribute to or are affected by the problem of the ozone layer?
April 4, 2010 by Keza

Chemistry
A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 x in diameter, while the diameter of the 2002 hole was 6.9 x Calculate the difference in size between the two holes in square meters
July 20, 2011 by Norma

Writing
I need help with unscrambling this sentence - a the absorbs upper rays uv beneficial of layer atmosphere, ozone
September 25, 2011 by Eric

environmental science
what are the sources of the following: carbon dioxide CO2 chlorofluorocarbons CFC's ground level ozone
July 21, 2012 by tia

Science
Which statement best summarizes the worlds reaction to stratospheric ozone depletion discussed in Chapter 7.4 of your text?
March 4, 2014 by 100 %

Chemistry
Chlorofluorocarbons (CFC's) are organic compounds that have been implicated in ozone depletion. When the CFC known as Freon 12 (CCl2F2) is exposed to UV radiation (wavelength in the range of 10 nm to 400 nm, a bit shorter than visible light), a chlorine atom breaks off from ...
March 5, 2013 by Anonymous

science
what are sources and Health/Environmental Effects Carbon dioxide, Chlorofluorocarbons, Ground-level ozone, Sulfuric acid?
April 16, 2008 by brady

Geography
Difference between ozone depletion and global warming Must include 2 cause, 3 effects, 3 solutions and 2 internet information
May 31, 2009 by Madhuvanthi

biology
How did the primordial atmosphere, photosynthesis, oxygen, the ozone layer, and the endosymbiotic theory influence the origin of living organisms?
September 2, 2009 by Serena

Technology & Society
Which of the following is an ingredient of acid rain? A. Lead B. Nitrogen dioxide C. VOCs D. Ozone I think it's B., but not sure.
July 25, 2014 by Pat

Environmental Issues
My science teacher says that cattle flatulence is destroying the ozone layer. If this is true, what can we do to regulate the flatulence output of cattle in order to preserve the ozone? http://www.guardian.co.uk/climatechange/story/0,12374,905360,00.html http://www.google.com/...
May 10, 2007 by Joey

Chemistry
Write the balanced chemical equation for reaction the following chemical reaction ozone gas , O3 , reacts with 2,3,4,5-tetramethylheptane, CH3-CH(CH3)-CH(CH3)-CH(CH3)-CH(CH3)-CH2-CH3 , to produce carbon dioxide gas, CO2 , and water vapor, H2O
April 18, 2013 by Ashley

Advance Biology
I need help writting exactly 25 words to describe the relationship between CFCs and the Earth's protective ozone layer.
November 1, 2009 by Jennifer

HS Chem
Using terms of equilibrium, what is the difference between spilling a glass of milk versus ozone eminating from your copy machine?
March 13, 2012 by Chris

chemistry
A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 x 107 mi2 in diameter, while the diameter of the 2002 hole was 6.9 x 106 mi2 Calculate the difference in size between the two holes in square meters.
June 26, 2011 by roy

Science
Having trouble with the question below. Clouds form when air is: a. swirled by wind b. heated by the sun c. turned into ozone Thanks.
February 8, 2013 by Brandi

Chemistry
CFCs such as CF2Cl2 are refrigerants whose use has been phased out because their destructive effect on Earth's ozone layer. The standard enthalpy of evaporation of CF2Cl2 is 17.4 kJ/mol, compared with change in H(vapor)=41kJ/mol for liquid water. How many grams of liquid ...
November 6, 2011 by Kay

Chemistry
Ozone, O3, absorbs ultraviolet radiation and dissociates into O2 molecules and O atoms: O3 + hv --> O2 + O A 1.10 L sample of air at 22 degrees Celsius and 748mm Hg contains 0.25ppm of O3. How much energy, in joules, must be absorbed if all the O3 molecules in the sample of...
February 14, 2011 by Jason

science
earth appears to be mostly blue when viewed from space because it is mostly covered by ? a) water b) oxygen c) carbon dioxide d) ozone
November 8, 2013 by victoria

Chemistry
The decomposition of ozone may occur through the two-step mechanism shown below: step 1 O3 ----> O2 + O step 2 O3 + O ---> 2O2 The oxygen atom is considered to be: a catalyst or reaction intermediate? How am I supposed to be able to tell the difference between the two? I...
February 19, 2013 by Marcus

science
hi can someone please help me. I need a scientific article with an author that is about ozone depletion. I have been looking forever. Please help thank you
August 14, 2009 by sam

Chemistry
Please write the balanced chemical equation for reaction the following chemical reaction ozone gas, O3, reacts with 3,3,4,4,5,5-hexanmethyl-1-hexyne, H-C≡C-C(CH3)2-C(CH3)2-C(CH3)2-CH3 to produce carbon dioxide gas, CO2 , and water gas, H2O When balancing the equation , ...
November 8, 2012 by Amanda

Ochem
Give the products (if any) expected from the treatment of the following compounds with ozone followed by aqueous hydrogen peroxide. Do not include any byproducts. 1) 2-methyl-2-pentene 2) cyclooctene Please help! I'm not sure on where to start with this problem.
February 8, 2012 by Lucy

science
The ozone's hole is supposably getting bigger, but is it really? or are we just hearing the worst becuase the size changes with seasons and we just see from when it is at its biggest form?
November 18, 2007 by Anonymous

science(please check answers)
1.which of the following were found to destroy ozone in the upper atmosphere? A. sulfur oxides B. cfcs(i pick this) C. nitrogen oxides D. carbon dioxide 2.which of the following sets of terms is associated with air pollution caused by burning fossil fuels? A. acid rain,ozone ...
December 20, 2013 by matt

science
what are the major harmful effects of ozone depletion on each of the following: human health crop yields forest productivity materials such as plastics and paints plankton productivity thanks in advance
October 9, 2007 by Brooklynn

SCI 275
i need help I am having trouble finding this info. Issue Sources Health/Environmental Effects Carbon dioxide (CO2) Chlorofluorocarbons (CFCs) Ground-level ozone (O3) Sulfuric acid (H2SO4)
November 26, 2007 by dawn

Science
What would happen if ozone were to disappear from the upper atmosphere? From the lower atmosphere? Would we die if it disappeared completely?
October 29, 2011 by Shirley

Chemistry
write the balanced chemical equation for reaction the following chemical reaction ozone gas, O3 , reacts with 3,3,4,4,5,5-hexamethyl-1-hexyne, H-CC-C(CH3)2-C(CH3)2-C(CH3)2-CH3 to produce carbon dioxide gas, CO2 , and water gas , H2O . When balancing the equation , use the ...
March 12, 2012 by Susan

chemistry
The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or 8.25*10^-11 M. ...
October 15, 2012 by Brun

chemistry
The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or 8.25*10^-11 M. ...
October 15, 2012 by Brun

Chemistry
The iodide ion can be oxidized in an acidic solution by hydrogen peroxide. One proposed mechanism for the reaction is as follows: Step 1: H2O2 (aq) + I-(aq) → H2O (l) + OI-(aq) slow Step 2: H+(aq) + OI-(aq) → HOI(aq) fast Step 3: HOI (aq) + H+(aq) + I-(aq) → ...
November 13, 2011 by Neha

Science
Which one of the following is incorrect at room temperature? a.Water is liquid at 1 atmosphere b.ozone is gas at 1 Atmosphere c.O4 EXISTS AT VERY HIGH PRESSURE d.CH4 IS LIQUID AT LOW PRESSURE
November 3, 2012 by Ajai

Biology
Eutrophication refers to 1. the concentration of a toxic substance in the tissues of organisms. 2. depletion of mineral resources as a result of leaching. 3. the warming of the earths surface. 4. the damage to the ozone layer that protects the earth from UV light. 5. nutrient...
March 19, 2013 by Elena

last science check
6. Which of the following pairs of words correctly completes the blanks in the sentence below? Depletion of_____ has been halted by a ban on the manufacturing of____ .. the ozone layer, chlorofluorocarbons. acid rain, carbon dioxide. fossil fuels, gasoline. global warming, ...
May 26, 2014 by me

Environmental Science
Does wind intensify air pollution? I do not see how it can, but i can see how it spreads pollution around the ozone. I dont think it do. Bur I come from not usa.I come from Espana.I do not know sorry.Can you helpy me? yes
February 24, 2007 by Jennifer

Chemistry
Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g) 2. When 2.75 dm3 of O2 react with an excess of glucose (C6H12O2), according to the reaction below, ...
October 24, 2013 by UnName

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