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  1. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    Redox is same like oxidation and reduction reaction. it involves the transfer of two types of chemical species.
  2. NIM

    Srry dude!!! I had to go bt can u plz solve it again and post...:P I'll b thankful to u...:D...

    Srry dude!!! I had to go bt can u plz solve it again and post...:P I'll b thankful to u...:D Thanks in advance... :)
    • NIM
    • Profile post comment
  3. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    :( guys need help!!!:( 1)...Elements Cl and F can form an ionic compound.Draw a diagram that shows the formula of this compound, the charges on the ions and the arrangement of the valency electrons around the negative ion. Use o to represent an electron from an atom of Cl. Use x to represent an...
  4. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    oh ok thnx!!
  5. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    Guys!!! Room temp is 23 or 24 degree C...:p Confused a bit :D
  6. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    (i) lithium oxide + sulphuric acid lithium sulphate + water. Change into a symbol equation??? (ii) CuO + 2H*___ Cu2* + H2O. Change the ionic equation into a symbol equation??? (iii) Carbonyl chloride reacts with water to form two acidic compounds. Suggest which acidic compounds are formed...
  7. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    can u give me examples of ionic also
  8. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    thnx i got it!!!:P
  9. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    ya it helped!!!
  10. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    - Chlorine reacts with phosphorus to form phosphorus trichloride. (i) Draw a diagram showing the arrangement of the valency electrons in one molecule of the covalent compound, phosphorus trichloride. Use x to represent an electron from a phosphorus atom. Use o to represent an electron from a...
  11. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    thnx a lot dude!!! if i hav any other question lyk this i'll ask u...:P
  12. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    ya!!! bt still didnt get it!!! plz help...:P
  13. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    thnx bt still i didnt get question 3 .. can u plz explain me again!!!
  14. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    1)- Sulfur dioxide is made by spraying molten sulfur into air. The sulfur ignites and sulfur dioxide is formed. Suggest why molten sulfur is used in the form of a fi ne spray??? 2) Antimony, Sb, is an element in Group V. The main ore of antimony is its sulfi de. The extraction of antimony is...
  15. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    i don't know i feel headache while doing chemical calculations (stoichiometry).... and still i didnt get stoichiometry chap!!!
  16. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    ok thnx... i got it!!!
  17. NIM

    Physics, Chemistry and Biology: Post your doubts here!

    Guys need help!!! 1) How is zinc oxide obtained from zinc sulfide??? 2) During electrolysis, it is necessary to add more chromium(III) sulfate but during copper-plating using a copper anode, it is not necessary to add more copper(II) sulfate. Explain??? 3) What is meant by the term...
  18. NIM

    Biology; Chemistry; Physics: Post your doubts here!

    r u doing IGCSE or O'levels...:confused:
  19. NIM

    Biology; Chemistry; Physics: Post your doubts here!

    Good luck guys!!!:barefoot: and All the Best fr phy...;) Do well in exam...(y)
  20. NIM

    A harmful truth is better than a useful lie. so never lie!!!

    A harmful truth is better than a useful lie. so never lie!!!
    • NIM
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