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  1. T

    more doubts in the CHEM syllabus

    the syllabus is sooo CONFUSING!!! :x i don't get what these mean, and even if i do, i don't understand them....... 1) Describe in outline the usefulness of chromatography in separating and identifying the product of hydrolysis of carbohydrates and proteins. 2) Describe the reactivity series...
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    acid bases and salts

    anyways, H+ ions are only formed when hydrogen chloride dissolves in water!!! It's not called aqueous fro nothing!!
  3. T

    There is smthing wrong in the papers!

    but then why isn't the other marking scheme not available in ANY of the sites????????
  4. T

    acid bases and salts

    i don't think they'll ask us to draw the ACID, just the gas(the covalent bond) maybe............ :?
  5. T

    There is smthing wrong in the papers!

    i did not find the marking scheme for that paper too!! And i've been looking for it all over Hell's half acre!!!
  6. T

    WHO CAN SOLVE THIS MOLE question???

    o.o sorry nd yes i understood...................................................................... :-)
  7. T

    WHO CAN SOLVE THIS MOLE question???

    THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU THANKYOU Jazak(i) Allah Jazak(i) Allah Jazak(i) Allah Jazak(i) Allah Jazak(i) Allah Jazak(i) Allah Jazak(i) Allah Jazak(i) Allah Jazak(i)...
  8. T

    WHO CAN SOLVE THIS MOLE question???

    idk my teacher gave it in a test ......... :-( and that was last year
  9. T

    WHO CAN SOLVE THIS MOLE question???

    sorry , no i do not know the answer...... :-(
  10. T

    WHO CAN SOLVE THIS MOLE question???

    oh please take your own time.......i can wait!!! I tried solving it....but couldn't!!
  11. T

    WHO CAN SOLVE THIS MOLE question???

    Does anybody know how to answer this? Sodium carbonate crystals have the formula Na2CO3 n H20 A 27.823g sample of crystals was dissolved in water. 25.0 cm3 of this solution was reacted with 48.8 cm3 of 0.1 mol/dm3 hydrochloric acid. Find n in the formula of crystals.
  12. T

    Hey!!

    Physics p3, Chemistry p6, and many more were the TOUGHEST....like nothin' i've seen before...... :( I was hoping for much easier/simpler examinations.... And I wouldn't even like to talk about Biology, since i'm not sure whether it was BIOLOGy at all....
  13. T

    MAJOR DOUBT IN CHEM

    1) Give two ways by which carbon dioxide is removed naturally fro the atmosphere. Photosynthesis and..........? :( 2) This was in the syllabus but i didn't understand it. Could somebody explain? "Describe the differences in volatility, solubility and electrical conductivity betweem ionic and...
  14. T

    Dr. Roger Norris - EXAMINERS' TIPS

    No problem, SUPERXD, anyways, u helped alot with that revision.......... Jazakallah Khairan too, AND I AM MUSLIM..... ;-)
  15. T

    Dr. Roger Norris - EXAMINERS' TIPS

    Well, SINCE everyone is being NICE, i thought I'd post this........ Read the question correctly. For example, if the question says ‘give two observations apart from temperature change’, don’t include temperature change in your answer • Check for contradictions within your answer. For example...
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    doubt in the chem Syllabus??

    hmm.... thanx guys :|
  17. T

    doubt in the chem Syllabus??

    The Syllabus says: "Describe the change from metallic to no-metallic character across a period." What does this mean???? And can anyone help me understand it???? :) PLus: How is chromatography used to purify substances???(by separating impurities) An example??? The procedure??? Aluminium...
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    CHEMISTRY DOUBT!!!

    SuperXD? You say ur doin' IGs? I understand what u've written but u didn't need to write that..................... :P
  19. T

    CHEMISTRY DOUBT!!!

    I don't understand the concept behind ionic bonds............. Please explain how ionic bonds FORM AND What they really are.....
  20. T

    Sources of sulfur

    But what about Zinc sulphide and fossil fuels??
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