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Search results

  1. haochen

    Salt preparation chemistry !

    :)
  2. haochen

    Chemistry doubts..ask here!

    hope u got it :D
  3. haochen

    physics help please!!!

    thx gud luck to u too :D
  4. haochen

    Tips for Exam Success =))

    same as what i did :D
  5. haochen

    Salt preparation chemistry !

    preparing insoluble salt: they mostly ask for the formulas eg. ....... + ....... ----> BaSO4 the easiest way the get the reactant is to split the two ions Ba and SO4 and add nitrate(NO3) to the first and add nitrogen(N) to the second and now u got the two reactant to make an insoluble salt :D...
  6. haochen

    physics help please!!!

    i wasnt here when u asked thoose question :(
  7. haochen

    Chemistry Paper 62 discussion

    :)
  8. haochen

    I am back and wont leave you ,even if u mistrusted me

    because it is unreactive and to speed up the rate of reaction :D
  9. haochen

    Chemistry doubts..ask here!

    yeah :D
  10. haochen

    I am back and wont leave you ,even if u mistrusted me

    cold acid?? dont understand :)
  11. haochen

    HI GUYS!!! EXAMBOY IS HERE!!!!!!!

    i dont :lol:
  12. haochen

    Chemistry doubts..ask here!

    im in jeddah and my exam start at 3 pm and u???
  13. haochen

    Randoms About Exam

    :D KMIS was it global before ??
  14. haochen

    Chemistry doubts..ask here!

    hi im back :D
  15. haochen

    Chemistry doubts..ask here!

    i think it means that the time taken to completely rust the iron :D
  16. haochen

    PHY HELP ???

    i think by: calculate 30% of 0.15 =0.045 the do cross mutiplication so (0.045 * 5.0x10^5 ) / 0.15 =1.5x10^5 Pa hope it is correct :D
  17. haochen

    Chemistry doubt

    press on quote :D by reducing agent
  18. haochen

    Randoms About Exam

    im giving mine in Al rowad (which is also knwon as pioneer) intl skol :D so hard to find narutogirl 's skol :D
  19. haochen

    Chemistry doubts..ask here!

    this is a test for iron (11) so it doesnt dissolve in excess. (cation table) and it give green ppt. so saying that it is insolube is not enuf..ok :/ saying insoluble is not enough coz u need to follow the test and write all the observation :D i think it means that the time taken to...
  20. haochen

    Chemistry doubts..ask here!

    he is wrong :) and ionising effect??? never heard of them but if u gave me some example or question i might know :) they mean that it should be on the same line as the dot. u r right :D
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