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    (Original post by yugiohtheawesome)
    Thanks I get it now

    I have another question

    I don't understand how the release of NOx at the earth's surface damages the ozone layer?


    Posted from TSR Mobile
    They photodissociate to form radicals which then react with ozone to form oxygen.
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    Enjoy.

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    Does anyone know what we need to do differently if given a calculation question on ppb? I'm worried because we have practiced ppm calculations but all the values in this are ppb (parts per billion)
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    (Original post by Jlane5000)
    Does anyone know what we need to do differently if given a calculation question on ppb? I'm worried because we have practiced ppm calculations but all the values in this are ppb (parts per billion)
    Instead of multiplying/dividing by 10,000, you would multiply/divide by 10,000,000
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    (Original post by super121)
    Instead of multiplying/dividing by 10,000, you would multiply/divide by 10,000,000
    cheers
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    Omg guys Wha tis pre release material are we supposed to know for OCR A Chemistry F322 exam on 4th June????
    We didn't do all these things ... *cnfused*
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    (Original post by Jacksgap)
    Omg guys Wha tis pre release material are we supposed to know for OCR A Chemistry F322 exam on 4th June????
    We didn't do all these things ... *cnfused*
    It's not for OCR A, it's for OCR B salters.
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    (Original post by super121)
    It's not for OCR A, it's for OCR B salters.
    thank youu
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    (Original post by Jacksgap)
    Omg guys Wha tis pre release material are we supposed to know for OCR A Chemistry F322 exam on 4th June????
    We didn't do all these things ... *cnfused*
    You are not in this messed up spec, so don't worry
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    (Original post by Jacksgap)
    thank youu
    i made the same mistake on an F322 thread lool
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    (Original post by Hilz14)
    i made the same mistake on an F322 thread lool
    me to haha

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    Just to clarify % to ppbv you x 10,000,000 and divide for vice versa? Thanks.

    Oh and could someone explain this wet and dry deposition stuff it's confusing me

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    (Original post by Branny101)
    Just to clarify % to ppbv you x 10,000,000 and divide for vice versa? Thanks.

    Oh and could someone explain this wet and dry deposition stuff it's confusing me

    Posted from TSR Mobile
    Ok so wet deposition is the removal of substance through by acid rain, snow and fog (you see they are what we would call WET things)
    Dry deposition is the removal of substance when acidic chemicals are incorporated with dust and smoke so they stick to cars and tress (so it's usually lost to dry things)

    Do you get it?
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    (Original post by Whostolemycookie)
    Ok so wet deposition is the removal of substance through by acid rain, snow and fog (you see they are what we would call WET things)
    Dry deposition is the removal of substance when acidic chemicals are incorporated with dust and smoke so they stick to cars and tress (so it's usually lost to dry things)

    Do you get it?
    Ahhhh thanks, makes total sense

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    The notice isn't too bad tbh.
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    Question: When ozone absorbs infrared radiation it vibrates but how does this cause the troposphere to warm up?
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    (Original post by Whostolemycookie)
    Question: When ozone absorbs infrared radiation it vibrates but how does this cause the troposphere to warm up?
    the vibrational energy within the bonds increase---the molecules move faster---the vibrational energy in transferred to kinetic energy which raises atmospheric tempereature. and some of the ozone molecules re-emit the absorbed Infared in all direction some of which warm the earth.
    this is a model answer, use it for any question like that.

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    Thanks
    • Thread Starter
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    (Original post by Whostolemycookie)
    Question: When ozone absorbs infrared radiation it vibrates but how does this cause the troposphere to warm up?
    Vibrational energy get's converted to kinetic energy which then goes on to raise the temperature
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    Another question sorry, but when the shape of a molecule is bent is it aways 104.5 or can it sometimes be 120?
 
 
 
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