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  1. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    whren can i download some chemistry 2014 m/j papers
  2. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    WISH U ALL THE BEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ;)(y)
  3. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    8cm^3 of phosphate reacts completely with 12cm^3 of the T nitrate. So we will take the ratio. Phosphate:T 8:12 2:3 So i guess it will be like T3(PO4)2 As it takes 3 of the T ones to reach with 2 of the phosphates. I am not sure between.
  4. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    I did slept in the afternoon so there's no prob
  5. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    me
  6. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    how does respiration increases co2 content in the atmosphere?
  7. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    should it be MgCl or MgCl2 as Mg2+ combined with Cl- =MgCl2?
  8. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    thanx
  9. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    may you pliz show your workin
  10. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    1,2g of magnesium reacts with a solution containing 2,74g of Hydrochloric acid . what is the limiting reactant ?
  11. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    i think you should use the the general formula CnH2n+1OH=116 which is 12n+(2n+1)+16+1=116 14n+18=116 14n/14=(116-18)/14 n=7 therefore alocohol is C7H15OH
  12. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    me dude
  13. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    about the oxidation of the ethanol
  14. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    a about the oxidation of the ethanol using acidified......
  15. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    i think that its for alkenes only
  16. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    How do these affect percentage of carbon dioxide in the atmosphere? 1. respiration(3) 2.combustion(3) via 0620/32/m/j/13
  17. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    how about the equation.........
  18. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    I do think that the polymer is in the form of starch so it can be represented like this.
  19. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    I think its Zinc butanoate + hydrogen
  20. shingiechingz@8

    Physics, Chemistry and Biology: Post your doubts here!

    how do we describe 1. the formation of ethanoic acid using acidified KMnO4 (3) 2.the usefulness of chromatography in separating and identifying mixtures(4)
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