~ Nature's Hmm... Blog ~

• jay_rocks

  13 Sep 05, 16:09

  http://www.sgforums.com/?action=thread_display&thread_id=152473
  
  wah...siao planning
• poon cho tang

  13 Sep 05, 16:16

  lebbrel up~
• poon cho tang

  13 Sep 05, 16:17

  boh eng...bbl~
• jay_rocks

  13 Sep 05, 16:18

  Originally posted by poon cho tang:

  boh eng...bbl~

  help me solve the qn ma.
• jay_rocks

  13 Sep 05, 16:38

  sometimes got ppl , sometimes no. weird.
• poon cho tang

  13 Sep 05, 16:54

  Originally posted by jay_rocks:

  help me solve the qn ma.

  answered liow
• jay_rocks

  13 Sep 05, 17:11

  Originally posted by poon cho tang:

  answered liow

  ok. thx.
• jay_rocks

  13 Sep 05, 17:14

  pct is such a smart guy
• poon cho tang

  13 Sep 05, 17:16

  Originally posted by jay_rocks:

  pct is such a smart guy

  no, i m not dat smart
• jay_rocks

  13 Sep 05, 17:19

  Originally posted by poon cho tang:

  no, i m not dat smart

  wan another qn?
• jay_rocks

  13 Sep 05, 17:22

  heres d qn.
  
  63.0dm³ of carbon monoxie, measured at r.t.p, was ued to react with iron (iii) oxide. what mass of iron was produced at the end of the reaction? the eqn for the reaction is Fe2O3 (s) + 3CO (g)----> 2Fe (s) + 3CO2 (g)
• poon cho tang

  13 Sep 05, 17:27

  Originally posted by jay_rocks:

  heres d qn.
  
  63.0dm³ of carbon monoxie, measured at r.t.p, was ued to react with iron (iii) oxide. what mass of iron was produced at the end of the reaction? the eqn for the reaction is Fe2O3 (s) + 3CO (g)----> 2Fe (s) + 3CO2 (g)

  wots the std volume of 1 mole of gas at rtp? 24 dm³?
• jay_rocks

  13 Sep 05, 17:28

  Originally posted by poon cho tang:

  wots the std volume of gas at rtp? 24 dm³?

  yeap
• poon cho tang

  13 Sep 05, 17:32

  Originally posted by jay_rocks:

  heres d qn.
  
  63.0dm³ of carbon monoxie, measured at r.t.p, was ued to react with iron (iii) oxide. what mass of iron was produced at the end of the reaction? the eqn for the reaction is Fe2O3 (s) + 3CO (g)----> 2Fe (s) + 3CO2 (g)

  no of of moles of CO = 63/24
  
  no of moles of Fe = 2/3 × no of moles of CO
  = 2/3 × 63/24
  = 1.75 moles
  
  atomic weight of Fe = 55.8
  mass of Fe = 1.75 × 55.8 = 97.6 g
  
• BabyLover

  13 Sep 05, 17:35

  quai yao fang gong le!!
• jay_rocks

  13 Sep 05, 17:37

  Originally posted by poon cho tang:

  no of of moles of CO = 63/24
  
  no of moles of Fe = 2/3 × no of moles of CO
  = 2/3 × 63/24
  = 1.75 moles
  
  atomic weight of Fe = 55.8
  mass of Fe = 1.75 × 55.8 = 97.6 g
  

  aiya, got it wrong.
• poon cho tang

  13 Sep 05, 17:37

  Originally posted by BabyLover:

  quai yao fang gong le!!

  finally
• poon cho tang

  13 Sep 05, 17:37

  Originally posted by jay_rocks:

  aiya, got it wrong.

  who? mi?
• BabyLover

  13 Sep 05, 17:38

  Originally posted by poon cho tang:

  finally

  yayy...
• LeftBallBigger

  13 Sep 05, 17:39

  hmmmmmmmmmmm
  
  hmmmmmmhappy hour!
  
  
• jay_rocks

  13 Sep 05, 17:40

  Originally posted by poon cho tang:

  who? mi?

  mi.
• poon cho tang

  13 Sep 05, 17:40

  back to work again...bbl~
• jay_rocks

  13 Sep 05, 17:43

  Originally posted by poon cho tang:

  back to work again...bbl~

  ke lian
• jay_rocks

  13 Sep 05, 17:49

  getting more and more diff.
  
  hydrogen and nitrogen react together according to the eqn
  
  N2(g) + 3H2(g) ---> 2NH3(g)
  
  calculate the vol of ammonia gas produced when 20cm³ of nitrogen gas was reacted with an excess of hydrogen gas. deduce the vol of hydrogen required for the reaction.
  
  why so diff de.
• BabyLover

  13 Sep 05, 17:51

  i wanna puke