Qualification > Sciences
CHEMISTRY PAPER 1 HERE
kam:
--- Quote from: amy.mym on June 12, 2009, 02:28:47 am ---Well their originality is from Dead animals and plants ?
Can anyone help me with Question 29 Paper 1 June 2004
how do we know the volume of Oxygen !
--- End quote ---
the volume of oxygen is 30cm3
but the air i have no idea
i think its bcuz thts the maximum mark on the gas syringe
amy.mym:
oh Thanks man
O.k one more and thats it lol
emm how about the same paper ( June 2004 ) paper 1 Question 19 ?
Why is the answer ammonia ?
Bani:
--- Quote from: kam on June 12, 2009, 02:35:47 am ---
--- Quote from: amy.mym on June 12, 2009, 02:28:47 am ---Well their originality is from Dead animals and plants ?
Can anyone help me with Question 29 Paper 1 June 2004
how do we know the volume of Oxygen !
--- End quote ---
the volume of oxygen is 30cm3
but the air i have no idea
i think its bcuz thts the maximum mark on the gas syringe
--- End quote ---
its because oxygen is 21% of air,
so....just work out of the options available which would give the correct answer....
amy.mym:
REP + Thanks Bani
kam:
--- Quote from: amy.mym on June 12, 2009, 02:37:32 am ---oh Thanks man
O.k one more and thats it lol
emm how about the same paper ( June 2004 ) paper 1 Question 19 ?
Why is the answer ammonia ?
--- End quote ---
bcuz al does not disslove in excess and zinc does so u can distinguish between them
for sodium hydroxide
both dissolve in excess so u cant tell the difference
gettit/?
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