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  1. vedette

    CAIE Oct/Nov 2020 session discussion

    you're welcome ;)
  2. vedette

    CAIE Oct/Nov 2020 session discussion

    thank u
  3. vedette

    CAIE Oct/Nov 2020 session discussion

    anyways Good luck😜
  4. vedette

    CAIE Oct/Nov 2020 session discussion

    nah i'm not finishing till friday still have 2 more 2 go
  5. vedette

    Chemistry 9701 Multiple choice questions

    i finally found the solution.first off all write the balanced equation.it's going to give you: 6NaOH + 3Cl2 → 5NaCl + NaClO3 + 3H2O then cal the no of mol in NaOH n of moles = conc x vol= 0.6 x 100/1000=0.6 use the equation to find the no of mol in nacl 6→ 5 0.6→ x =0.6 x 5/6=0.5 mol
  6. vedette

    CAIE Oct/Nov 2020 session discussion

    don't worry we're all in this together. i guess you should solve as many past questions as you can
  7. vedette

    Chemistry 9701 Multiple choice questions

    you're welcome sorry if i couldn't explain some
  8. vedette

    Chemistry 9701 Multiple choice questions

    honestly IDK
  9. vedette

    Chemistry 9701 Multiple choice questions

    are you sure the answer is b?
  10. vedette

    Chemistry 9701 Multiple choice questions

    ok first of all let's identify all the elements W-2+4 → 6 → carbon X-2+6 → 8 → oxygen Y-2+8+2 → 12 → magnesium Z-2+8+8+1 → 19 → potassium so they asked us which compound would have boiling points lower than room temp(25 oc).so basically the compound is supposed to be a convelently bounded...
  11. vedette

    Chemistry 9701 Multiple choice questions

    i think well you say the o2 conc is x and the so2 conc is 2x so i guess you substitute as follows and get your answer kc= [s03]/[02]x[s02]^2
  12. vedette

    Chemistry 9701 Multiple choice questions

    sorry i don't know
  13. vedette

    Chemistry 9701 Multiple choice questions

    i think u construct a multi step reaction circle(born haber cycle) since C + H2 → C2H4 and C2H2 +H2 → C2H4 so i guess at the end of the day u subtract -175.8 fom 52.2 to give you 228 sorry not to sure how to explain it futher
  14. vedette

    Chemistry 9701 Multiple choice questions

    ok i'll try
  15. vedette

    Chemistry 9701 Multiple choice questions

    u r welcome
  16. vedette

    CAIE Resource Guide - 1234_S18_QP_12!?

    Thank you 😁
  17. vedette

    CAIE Resource Guide - 1234_S18_QP_12!?

    if s means summer and w means winter what about M?
  18. vedette

    Chemistry 9701 Multiple choice questions

    i got an explanation for this one.you know carbon has four electrons available for pairing right? so it pairs 3 of its electrons with 1 electron each from the 3 hydrogens to form three pairs.so it will have one unpaired electron.the negative symbol shows us that it has gained one electron.that...
  19. vedette

    CAIE Oct/Nov 2020 session discussion

    at least i'm not alone
  20. vedette

    CAIE Oct/Nov 2020 session discussion

    meh
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