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  1. periyasamy

    Chemistry: Post your doubts here!

    I think u r right man.Thanks a lot.
  2. periyasamy

    Physics: Post your doubts here!

    Is it c?Maybe i am wrong.But this is my working.
  3. periyasamy

    Physics: Post your doubts here!

    Hope this helps.
  4. periyasamy

    Chemistry: Post your doubts here!

    Thanks boss,i understand it but sorry man,i checked the answer n it is A.
  5. periyasamy

    Chemistry: Post your doubts here!

  6. periyasamy

    Chemistry: Post your doubts here!

    Thanks bro.
  7. periyasamy

    Chemistry: Post your doubts here!

    Guys ,just want to ask .For the question below option a is selected is it because it has something to do with the"in situ"preparation.Thanks a lot.
  8. periyasamy

    Chemistry: Post your doubts here!

    Which process could be used to calculate the bond energy for the covalent bond X-Y by dividing its ∆H by n? A XYn(g)→X(g) + nY(g) b 2XYn(g)→2XYn-1(g) + Y2(g) C Y(g) + XYn-1(g)→XYn(g) D nXY(g)→nX(g) +n/2 Y2(g) Why is the answer a? Help guys.Thanks a lot.
  9. periyasamy

    Chemistry: Post your doubts here!

    Is the answer a?
  10. periyasamy

    Chemistry: Post your doubts here!

    Check the file,i sent...First findnthe mole of co2.Then using the formula judge the no of mole of the aluminium compound.Then u will get the molar mass by using the mole formula.Finally u will get 144.Try each of the 4 options n u will get c.Hope it helps.
  11. periyasamy

    Chemistry: Post your doubts here!

    ans is c.Rite?
  12. periyasamy

    Chemistry: Post your doubts here!

    For 1st question.
  13. periyasamy

    Chemistry: Post your doubts here!

    Sorry bro,i rechecked it but the answer is B that is option 1 and 2 rite.Thanks a lot.
  14. periyasamy

    Chemistry: Post your doubts here!

    Hai guys.Anyone have idea about this question.Just want to ask why option 3 is rejected .Thanks guys.
  15. periyasamy

    Chemistry: Post your doubts here!

    Hi guys need help here? Ans is c.Thank u.
  16. periyasamy

    Chemistry: Post your doubts here!

    u got it?
  17. periyasamy

    Chemistry: Post your doubts here!

    I got to go out know.But generally what u need to do is this.First form a half equation for for pb ion n bromide ion.U will then get the ratio.So then u find the mole of pb ion using the mass given.Finally with the ration value,u can get the value of bromine.
  18. periyasamy

    Chemistry: Post your doubts here!

    Boss,sorry but what do u mean by that here is a base hydrolysis we have same number of D atoms as we would have expected for H atoms.
  19. periyasamy

    Chemistry: Post your doubts here!

    Thanks man.
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