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OCR Chemistry Salters B F331 27th May 2016 (Old specification) Watch

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    (Original post by Taz35)
    what did people get for the calculations?? I defo messed them all up 😑
    I can't remember all of mine lol... I got +41 for Hess' law. -30,000andsomething for the energy density (which I think may be wrong), 33.something % for the HNO3 by moles.


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    (Original post by Kaz_96)
    These were my calculation answers, in order of how they appeared in the q paper
    Mass of air: 834.7
    Mass of air for 1g of C4H10O: 11.28
    Energy Density: 36200
    Hess' Law: +41
    KNOW: 34.15%

    Not sure if theyre right but lemme know if you got the same/different
    Got the same as you apart from the last one. The mass of air need question stumped me for a while lol 😂😂


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    I can't remeber any of mine what did everyone put for the emission spectra one ?
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    (Original post by Kaz_96)
    These were my calculation answers, in order of how they appeared in the q paper
    Mass of air: 834.7
    Mass of air for 1g of C4H10O: 11.28
    Energy Density: 36200
    Hess' Law: +41
    KNOW: 34.15%

    Not sure if theyre right but lemme know if you got the same/different

    I got the same for Hess' law and energy density, but that's it 😂 ffs
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    (Original post by meg16)
    I can't remeber any of mine what did everyone put for the emission spectra one ?
    I put, the electrons get promoted and then fall to a lower energy level. As they fall they emit a photon. E=hv. Frequency corresponds to a certain colour. And different frequencies produce the other colours. (I think I missed some things)


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    I said greenhouse gas LOLOLOLOL
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    (Original post by SohaXO)
    I said greenhouse gas LOLOLOLOL
    Tbh I actually considered putting that. I ended up going with particulates. 😂😂


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    (Original post by Kwaks)
    I put, the electrons get promoted and then fall to a lower energy level. As they fall they emit a photon. E=hv. Frequency corresponds to a certain colour. And different frequencies produce the other colours. (I think I missed some things)


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    I did the same )))
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    I considered that too you are not alone 😂 I think particulates is right j thought about it but thought they meant a group of emissions so that threw me
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    (Original post by Taz35)
    I got the same for Hess' law and energy density, but that's it 😂 ffs
    Im not necessarily right though haha
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    The question when is asked to give a mathematical equation for the energy transferred was: E=m x c x triangleT????


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    (Original post by SohaXO)
    I did the same )))
    Yes I wrote the same but said strong line at red as absorbed from the red area visible light spec and at the highest frequency as from highest energy level
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    I thought for the mol and mass calculation questions they were asking the same question but then I read it carefully and it the same answer as people on here
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    (Original post by SohaXO)
    I did the same )))
    Let's hope the people who mark think we're correct 😂😂😂😂


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    What did people put for the frequency question did frequency increase > or < or was it to do with wavelength?
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    Kaz_96 your answer is wrong hahah


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    (Original post by Kaz_96)
    wasn't the hess' law calc +41? What did you put for the man made pollutant for the firework? I put photochemical smog, dunno if thats right though
    I put that too! Don't know if it's right though
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    (Original post by Kwaks)
    The question when is asked to give a mathematical equation for the energy transferred was: E=m x c x triangleT????


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    I did that 😅
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    (Original post by JgR1997)
    What did people put for the frequency question did frequency increase > or < or was it to do with wavelength?
    frequency ------->
    because the lines converged towards the right, i.e at the higher frequencies
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    (Original post by JgR1997)
    What did people put for the frequency question did frequency increase > or < or was it to do with wavelength?
    Frequency >
 
 
 
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