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  1. KurayamiKimmi

    Chemistry: Post your doubts here!

    this is because many monomers join up to make one mole of a polymer for example 10,000 monomers will join up to give one mole of polymer so one mole of a monomer will be equal to only 1/10,000th mole of the polymer therefore the answer has to be lesser than 1
  2. KurayamiKimmi

    Chemistry: Post your doubts here!

    Moreover if you google images of bromine vapour -you can see it's reddish brown not purple
  3. KurayamiKimmi

    Chemistry: Post your doubts here!

    exactly :)
  4. KurayamiKimmi

    Chemistry: Post your doubts here!

    its not and the answer is B i think
  5. KurayamiKimmi

    Chemistry: Post your doubts here!

    oh okay
  6. KurayamiKimmi

    Chemistry: Post your doubts here!

    i can try =) fire away ! :)
  7. KurayamiKimmi

    Chemistry: Post your doubts here!

    hey is your doubt solved?
  8. KurayamiKimmi

    Chemistry: Post your doubts here!

    :D glad i could be of help ^_^
  9. KurayamiKimmi

    Chemistry: Post your doubts here!

    which question :confused:
  10. KurayamiKimmi

    Chemistry: Post your doubts here!

    PCl5-->PCl3+Cl2 bonds broken in PCl5= P-Cl bonds broken= 33o*5=1650 bonds formed in PCl3=330*3 =990 bonds formed in Cl2=240 Bonds broken-bonds formed= 1650 -(990+240) therefore enthalpy change=+420
  11. KurayamiKimmi

    Chemistry: Post your doubts here!

    no problem :)
  12. KurayamiKimmi

    Chemistry: Post your doubts here!

    since the enthalpy change of formation of 2 moles of iron(III) oxide is -1648 the standard enthalpy change of formation of 1 mole of iron(III) oxide will be the half which is B
  13. KurayamiKimmi

    Chemistry: Post your doubts here!

    anytime ^_^
  14. KurayamiKimmi

    Chemistry: Post your doubts here!

    because it is a weak acid -weak acids form equilibriums
  15. KurayamiKimmi

    Chemistry: Post your doubts here!

    do you mean theoretical yied by measured yield ?=O
  16. KurayamiKimmi

    Chemistry: Post your doubts here!

    yes
  17. KurayamiKimmi

    Chemistry: Post your doubts here!

    Answer for question 35 the reactions will be Mg + 2 CH3COOH <=> Mg(CH3COO)2+ H2(g) Mg + H2SO4 → MgSO4 + H2 1 After 2 minutes, the sulfuric acid is at a higher temperature than the ethanoic acid. 2 After 2 minutes, the sulfuric acid has produced more gas than the ethanoic acid. this is because...
  18. KurayamiKimmi

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w08_qp_1.pdf http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w08_ms_1.pdf does anyone know how to get answers to q no 3O and 38?? any help...
  19. KurayamiKimmi

    Chemistry: Post your doubts here!

    from wikipedia lemme expain: example of a dimer is Al2Cl6 its a dimer of AlCl3 so you can think of a dimer as two same molecules bonded to each other for ex AlCl3+AlCl3=al2cl6
  20. KurayamiKimmi

    Chemistry: Post your doubts here!

    Thank you so much! ^_^
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