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Edexcel IAL Chemistry Unit 01 - 26th of May, 2017 Watch

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    HORRIBLE PAPER!!
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    (Original post by Droneon)
    Hoping the same honestly. Yeah I am. I have bio the day after and then Chem on Friday.
    I am so done rn, I'm trying to solve a logarithm ques rn and I just can't concentrate.


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    maybe u should take a break.. log questions are okay.. i just suck at sequence :/
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    (Original post by zooshan)
    maybe u should take a break.. log questions are okay.. i just suck at sequence :/
    SEQUENCES yes oh my god I suck too Not that I suck at log but I just can't do anymore lol


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    (Original post by Droneon)
    SEQUENCES yes oh my god I suck too Not that I suck at log but I just can't do anymore lol


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    i stpoed way before.. my brain is jammed..
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    (Original post by zooshan)
    i stpoed way before.. my brain is jammed..
    Yeah I'm totally stopping rn. Good luck for tomorrow tho Watch out for those elementary mistakes. :/


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    (Original post by Droneon)
    Yeah I'm totally stopping rn. Good luck for tomorrow tho Watch out for those elementary mistakes. :/


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    good luck to u too lets watch out.. i think i should write that down on my paper LOL
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    (Original post by zooshan)
    good luck to u too lets watch out.. i think i should write that down on my paper LOL
    LOL no you should, start the paper with it You go girl!


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    (Original post by Droneon)
    LOL no you should, start the paper with it You go girl!


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    hehehe .. u too... i pray we do this paper well... i need better marks.. c34 is a nightmare..
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    can anyone please explain for me how to determine the direction of the arrows in Hess law?
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    (Original post by Droneon)
    LOL no you should, start the paper with it You go girl!


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    heyy how was the c12 paper? ( i dont know anyone else who is doing c12)
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    (Original post by mr.holmes)
    can anyone please explain for me how to determine the direction of the arrows in Hess law?
    it depends on the question.. but either way its always the reagents to the products..
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    (Original post by zooshan)
    heyy how was the c12 paper? ( i dont know anyone else who is doing c12)
    Lol I dmed you. This is the chemistry thread after all


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    (Original post by Droneon)
    Lol I dmed you. This is the chemistry thread after all


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    hehe..
    yeah i just started chem revising..
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    raai ahamed, how's the exam preparations going on for tomorrow's exam?
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    Guys can u help me out with the electolysis to which shows that there is two typea of ions it
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    hey, how can you tell how many unpaired electrons an atom has in its ground state e.g. nitrogen?
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    (Original post by Saima Hasnain)
    hey, how can you tell how many unpaired electrons an atom has in its ground state e.g. nitrogen?
    From its electronic configuration


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    (Original post by Aadha24)
    Guys can u help me out with the electolysis to which shows that there is two typea of ions it
    What's the question


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    (Original post by Aadha24)
    Guys can u help me out with the electolysis to which shows that there is two typea of ions it
    that's nothing!! it is an evidence for the existence of ions and u have commonly the two cases:
    1.KMnO4 and 2.CuCrO4
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    hey
    can anyone please help me with these questions? i will really appreciate it!
    1. which of the following contains one mole of neutrons?
    A 1g of H1,1
    B 1g of C 12,6
    C 2g of Mg 24, 12
    D 2g of Ne 22,10

    2.
    10 g of Mg is added to 1dm3 of 1concentration copper (ii) sulfate solution and the mixture is stirred until no further reaction occurs.
    which of the following is a result of this reaction?
    A The resulting solution is colourless.
    B 10 g of copper is displaced.
    C 63.5 g of copper is displaced.
    D All the magnesium reacts.

    3.
    100 cm3 of hydrogen is mixed with 25 cm3
    of oxygen at a temperature of 150qC.
    The*gases react as shown in the equation below.
    2H2(g)+ O2(g) o 2H2O(g)
    The total volume of gas present at the end of the reaction is
    A 50 cm3
    B 100 cm3
    C 125 cm3
    D 150 cm3

    4.
    An experiment was carried out to measure the enthalpy change of the following reaction.
    NaOH(aq) + HCl(aq) ---------> NaCl(aq) + H2O(l)
    50 cm3 of hydrochloric acid was mixed with 50 cm3
    of sodium hydroxide solution.Each solution contained 0.10 mol solute. The temperature rise was 12C.
    Energy transferred (J) = mass of solution × 4.2 × change in temperature
    Assume the density of all solutions is 1.0 g cm–3.
    What is the enthalpy change of the reaction in kJ mol–1?

    A -(50 x4.2x12/0.1x 1000)
    .
    B -(50 x4.2x12/0.2x 1000)
    .
    C -(100 x4.2x12/0.1x 1000)
    .
    D -(100 x4.2x12/0.05x 1000)
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    (Original post by Reshyna)
    raai ahamed, how's the exam preparations going on for tomorrow's exam?
    yaa great rukiii
 
 
 
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