how was it (1 Viewer)

molong

New Member
Joined
Mar 20, 2008
Messages
3
Gender
Male
HSC
2009
test was easy imo except for galvanic cell... all the preparation payed off for once ^^ well i think it did

Yeah, in the galvanic sell, Platinum does nothing to the cell at all... just a funny little thing you have to remember...

;)

Industrial Chem was good. And I thought the multiple choice was awesome.
 

horsenesness

New Member
Joined
Feb 5, 2009
Messages
7
Gender
Female
HSC
2009
oh god sooo bad, i thought it was harder that the trial! too many calculations and hard crap! >_< really let me down :(
 

AJ92

Member
Joined
May 21, 2009
Messages
34
Gender
Female
HSC
2009
[0.45]^3 [0.15]
-------------------- = 5.4675 :)
___[0.05]^2
I got this too - i was terrified i stuffed up but apparently not :)

H2so4 main use is definitely in fertilisers - i think that even without mentioning superphosphate you'd get a mark but i put it in anyway - the syllabus point is very clear on this. The core doesn't help as it doesnt tell you the MAIN use.

I got 1.77% ish on the nitrogen, about 3.6 for the ethanol.

Overall i thought it was a very good paper, not too hard at all :party:
 

123huss123

New Member
Joined
Feb 20, 2008
Messages
13
Gender
Male
HSC
2010
[0.45]^3 [0.15]
-------------------- = 5.4675 :)
___[0.05]^2

lol i seriosly remember gettingg thos numbers or reallly similiar to themmmm
mustt offf effed it upp on my calculatorrrrr somehoww fuk fuk fuk if all ur working is shownn then ur final answer is retardedddd u still loose a markk rite ?
 

damianI

New Member
Joined
Jul 16, 2009
Messages
13
Gender
Male
HSC
2009
i think i got something like 1.1% for that one cos it was just asking for nitrogen content
 

123huss123

New Member
Joined
Feb 20, 2008
Messages
13
Gender
Male
HSC
2010
doess anyone hav the K constaNTT quetion ?
or like rememberr it...
 

Aerath

Retired
Joined
May 10, 2007
Messages
10,169
Gender
Undisclosed
HSC
N/A
I remember the answer was 5.6 or something. :p
 

Nitin Kankarla

New Member
Joined
Jul 18, 2008
Messages
2
Gender
Male
HSC
2009
i dont want to party poop....but @ kanux & carlytse.....the qestion asked for %nitrogen not % NH3....so u had to add another step 2NH3 ---> N2 + 3H2....then u divide no. of moles by 2...and if im not mistaken....the answer if i remember was around 1.7% or so
 

chuboy

Member
Joined
May 14, 2009
Messages
121
Location
Northern NSW
Gender
Male
HSC
2009
i dont want to party poop....but @ kanux & carlytse.....the qestion asked for %nitrogen not % NH3....so u had to add another step 2NH3 ---> N2 + 3H2....then u divide no. of moles by 2...and if im not mistaken....the answer if i remember was around 1.7% or so
Luckily you got the same answer but I think the official method is different...you are supposed to find the molar mass of nitrogen and the molar mass of ammonia, find the proportion of ammonia which is made up of nitrogen and use that to find the total weight of nitrogen in the sample. The Haber process didn't come into it at all.

This was essentially the same question as the sulfate content in fertiliser, just with different chemicals.
 

Gibbatron

Member
Joined
Mar 20, 2009
Messages
339
Gender
Male
HSC
N/A
I didnt use this method. The way i did it was to find the moles of ammonia, and then because there is only one N in NH3 then the molar ratio of N:NH3 is the same hence you have the same moles of nitrogen as ammonia and you can use this to find the mass.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top