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Recent content by mohhef3

  1. M

    Chemistry: Post your doubts here!

    how did u get that 3459 kj/mol.ok i got it but u should write LHS not RHS.right? thx alot mate
  2. M

    Chemistry: Post your doubts here!

    qwertypoiu i have both doubts tooo
  3. M

    Chemistry: Post your doubts here!

    someone help me out with que 30,28 and 23 http://maxpapers.com/syllabus-materials/chemistry-9701-a-level/attachment/9701_w14_qp_12/ and in que 32 what will differ in my calculations when i see that dot
  4. M

    Chemistry: Post your doubts here!

    someone help me out with que 30,28 and 23 http://maxpapers.com/syllabus-materials/chemistry-9701-a-level/attachment/9701_w14_qp_12/ and in que 32 what will differ in my calculations when i see that dot
  5. M

    Chemistry: Post your doubts here!

    someone help me out with que 30,28 and 23 http://maxpapers.com/syllabus-materials/chemistry-9701-a-level/attachment/9701_w14_qp_12/ and in que 32 what will differ in my calculations when i see that dot
  6. M

    Chemistry: Post your doubts here!

    oh i didnt multiply it by 10 he wanted it in the distilled solution.thx mate what r u studing?a levels or as
  7. M

    Chemistry: Post your doubts here!

    Use of the Data Booklet is relevant to this question. A sample of potassium oxide, K2O, is dissolved in 250cm3 of distilled water. 25.0cm3 solution is titrated against sulfuric acid of concentration 2.00moldm–3. 15.0 cm3 of this acid is needed for complete neutralisation. of this sulfuric...
  8. M

    Phys p12 and Chem p12- 9th and 10th June,2015 Tips!

    thx mate
  9. M

    Chemistry: Post your doubts here!

    Aluminium carbide, Al 4C3, reacts readily with aqueous sodium hydroxide. The two products of the reaction are NaAlO2 and a hydrocarbon. Water molecules are also involved as reactants. What is the formula of the hydrocarbon? A CH4 B C2H6 C C3H8 D C6H12 someone explain this plz the answer is A
  10. M

    Phys p12 and Chem p12- 9th and 10th June,2015 Tips!

    Aluminium carbide, Al 4C3, reacts readily with aqueous sodium hydroxide. The two products of the reaction are NaAlO2 and a hydrocarbon. Water molecules are also involved as reactants. What is the formula of the hydrocarbon? A CH4 B C2H6 C C3H8 D C6H12 someone explain this plz the answer is A
  11. M

    Chemistry: Post your doubts here!

    http://maxpapers.com/wp-content/uploads/2012/11/9701_s13_qp_12.pdf somone help me out with question 21 guys
  12. M

    Doubts for paper 1 CHEMISTRY (AS-level)

    The compound ‘leaf alcohol’ is partly responsible for the smell of new-mown grass. CH3CH2CH=CHCH2CH2OH leaf alcohol What will be formed when ‘leaf alcohol’ is oxidised using an excess of hot, acidified K2Cr2O7(aq)? A CH3CH2CH(OH)CH(OH)CH2CO2H B CH3CH2COCOCH2CO2H C CH3CH2CH=CHCH2CO2H D...
  13. M

    Doubts for paper 1 CHEMISTRY (AS-level)

    thx alot mate appretiated
  14. M

    Phys p12 and Chem p12- 9th and 10th June,2015 Tips!

    u r awsome mate thx alot
  15. M

    Chemistry: Post your doubts here!

    The following half reactions occur when potassium iodate(V), KIO3, in hydrochloric acid solution oxidises iodine to ICl 2 – . IO3 – + 2Cl – + 6H+ + 4e– → ICl 2 – + 3H2O I2 + 4Cl – → 2ICl 2 – + 2e– What is the ratio of IO3 – to I2 in the balanced chemical equation for the overall reaction? A 1...
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