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    (Original post by jshep000)
    If its like +- 0.4, you do 0.4/the original value lets say like 50cm^3 of water. Then x100 to get the %age error
    give another example please
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    (Original post by Shadowfire123)
    which way does the arrow point for formation and combustion and also to find enthalpy change
    But that's unit 2..

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    (Original post by Shadowfire123)
    give another example please
    %age error = error/reading (x100)
    So if error of 0.5cm^3, and you're measuring 20cm^3 of liquid. You do 0.5/20 (x100)
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    (Original post by Anon_98)
    But that's unit 2..

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    well no there is a question on this in unit 1
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    (Original post by jshep000)
    %age error = error/reading (x100)
    So if error of 0.5cm^3, and you're measuring 20cm^3 of liquid. You do 0.5/20 (x100)
    ohh right thanks that seems easy but when will you do times the error twice and the time by measuring and divide 100
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    Good luck guys just hope that this exams wasn't anything like the bio or physics paper


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    (Original post by Shadowfire123)
    which way does the arrow point for formation and combustion and also to find enthalpy change
    You should know this ..

    Combustion is down.
    formation is up.
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    (Original post by Dinaa)
    You should know this ..

    Combustion is down.
    formation is up.
    the stress is making me forget now


    thank you
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    (Original post by dinaa)
    you should know this ..

    Combustion is down.
    Formation is up.
    omd r e k t. Shots fired
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    (Original post by Shadowfire123)
    woow you should know this
    And I haven't done unit 1 in a while
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    (Original post by jshep000)
    omd r e k t. Shots fired
    haha i know
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    Fk I hate exams, i get all nervous in the morning and I legit can't eat anything without feeling like I'm going to throw up. Then in my exam 10 mins in, my belly rumbles lmao gg
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    (Original post by Dinaa)
    And I haven't done unit 1 in a while

    always think ppm is 10 to power 6
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    (Original post by ahsan_ijaz)
    Good luck guys just hope that this exams wasn't anything like the bio or physics paper


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    hoipe so too
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    (Original post by Shadowfire123)
    haha i know
    My teacher made us remember it like this:

    Formation ^up in heaven.
    combustion down in hell (earth) l0l so silly
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    (Original post by Dinaa)
    My teacher made us remember it like this:

    Formation ^up in heaven.
    combustion down in hell (earth) l0l so silly
    thanks lool it helps
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    (Original post by jshep000)
    Fk I hate exams, i get all nervous in the morning and I legit can't eat anything without feeling like I'm going to throw up. Then in my exam 10 mins in, my belly rumbles lmao gg
    same omg because of panic attaxks and all That crap my system turns down food.

    im burmt out in the exam 😑

    I was so confiddnt about thjs but ive frgtten stufff
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    (Original post by Dinaa)
    My teacher made us remember it like this:Formation ^up in heaven.combustion down in hell (earth) l0l so silly


    for example ppm 20ppm in blood pasma find how much in 100g of plasma

    so you know 20=1000000

    ?=100


    so you 20 times 100 divided by 1000000
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    (Original post by Shadowfire123)
    well no there is a question on this in unit 1
    Oh right okay.

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    (Original post by Dinaa)
    same omg because of panic attaxks and all That crap my system turns down food.

    im burmt out in the exam 😑

    I was so confiddnt about thjs but ive frgtten stufff
    idk what it is like I can never normally miss breakfast, but if i try to eat some food like I'll feel like I will throw up or I chew it for like 5 minutes LOL. RIP stomach. You'll be fine, just try to keep calm in there and it will all come back
 
 
 
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