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  1. W

    Chemistry: Post your doubts here!

    Yeah no shit sherlock , i mentioned that i think ^
  2. W

    Chemistry: Post your doubts here!

    The volume is not.to.be ignored , its not affecting anything but it is there , well if you do look at it practically, the volume.wouldnt be 20cm3 u gotta take into account the H20 formed when NaOH ions react with the salt thats why i was worried about the ans , we completely ignore the water...
  3. W

    Chemistry: Post your doubts here!

    We always take the total volume of the buffer solution when calculating conc of acid or salt , in most cases they have already given the conc of salt and acid .
  4. W

    Chemistry: Post your doubts here!

    Hey yo sherlock the answer is A , ya didnt help much XD
  5. W

    Chemistry: Post your doubts here!

    Laveeza whats the answer , C ? 2 and 3 are certainly true thats easy to understand right . 1 says there will be pressure difference between the atmosspere and the syringe rigth ? the reaction is in equilibrium/volume is constant/pressure is contant. Now if the pressure in the syringe was more...
  6. W

    Chemistry: Post your doubts here!

    amina1300 lol i think D is the only reaaction that can produce 2 chloro propane XD , C is just alcohol and salt . A and B proudce dichloro propane :P
  7. W

    Chemistry: Post your doubts here!

    amina1300 its a H3 molecule thats lost an electron , how many portons does it have (1 x 3 = 3 protons) and hence how many electrons (3 - 1 = 2) and no neutrons. next one is 6Li molecule thats also lost an elctron , how many portons does it have (look up the periodic table 3 protons) and hence...
  8. W

    Chemistry: Post your doubts here!

    its simple if you look at H the order is CH3 then H the OH think of this as a loop , you can go from ch3 to H but not directly to OH. Now look at J the order is OH , H and then CH3 is that not different student2 ?its the opposite actually u have to imagine the structure in 3d , btw the ans is J ?
  9. W

    Chemistry: Post your doubts here!

    this is how its done not sure if its right tho , do share the ans
  10. W

    Chemistry: Post your doubts here!

    areeba240 whats the answer ? 4.58 ?
  11. W

    Chemistry: Post your doubts here!

    elmansy kp= partial pressure of products^n / partial pressure of reactants^m partial pressure = total pressure X no.moles of / total number of moles. pressure = 2atm partail pressure of N2O4 = 2 X (40/100) = 0.8 partail pressure of NO2 = 2 X (60/100) = 1.2 Kp = 0.8 / (1.2)^2 = 0.56 ...
  12. W

    Chemistry: Post your doubts here!

    Relative size , LE is direcrly proptional to the charge/ionic radi , CaS will have ggreater ionic radi (0.1*0.18) hence LE will be lesser :)
  13. W

    Chemistry: Post your doubts here!

    Dont bother i got it :D
  14. W

    Chemistry: Post your doubts here!

    Please explain asap
  15. W

    A level Biology: Post your doubts here!

    B ?
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