multipule choice answers (1 Viewer)

SchizM

Member
Joined
Jun 14, 2003
Messages
34
Originally posted by iambored
can;t be d because the solids are dissolved, filtering will do nothing

hmmm, i don't agree, i think it's a because it will stay fairly constant and then go down, i don't think it would be as sharp as d
Hey iambored.....filtering will do something....its muddy river water bro and were determining dissolved solids
 

bob_the_catdog

New Member
Joined
Aug 15, 2003
Messages
16
Location
Wagga
Originally posted by Dave85
is x the most reactive metal since its more reactive and displaces the ions of a less active metal (Y and Z) and therefore its a??

in the third test tube, X does not replace the Z ions
therefore Z>X>Y
which is D
 

Rand

Member
Joined
Aug 5, 2003
Messages
91
Location
The Moon
Hahahaha

Yall are fuckin wierd...
Just think about these and stop asking why.

5 is D
Ask your techer or something if you think its anything else, coz ure wrong.

13 is D
This one is tricky, but think about it

14 is A
The answer comes from the idiot student's FIRST step

15 is A, not D
pH changes SLIGHTLY, but it will not just stay the same for such a long time
 

vegeta_316

Member
Joined
Sep 11, 2003
Messages
109
Location
Wollongong
Q13 was the last question i did in the paper cause I thought it was pretty confusing. :p It was a toss up between (a) and (d) and I guessed (a). :( The third diagram put me off when it said no reaction. I guess I forgot all that displacement stuff :(
 

Frigid

LLB (Hons)
Joined
Nov 17, 2002
Messages
6,208
Gender
Undisclosed
HSC
N/A
Q5?
how the heck do you get option D (Q and S)?

S is filtration, if something is dissolved, it'll go straight thru your filter...
 
N

ND

Guest
Frigid, you need to remove the suspended particles before you evaportae.
 
N

ND

Guest
Originally posted by Rand

14 is A
The answer comes from the idiot student's FIRST step
The procedure had two flaws, how do you figure that the concentration will be correct?
 

crazylilmonkee

Active Member
Joined
Aug 21, 2003
Messages
1,121
Gender
Female
HSC
2003
5D cos i cant be any others..
and its definately Q and S can filter small trace amounts

and with 13.. shit.. i think i read it wrong.. greatest activity huh.. i put in B but i think its D
 

Frigid

LLB (Hons)
Joined
Nov 17, 2002
Messages
6,208
Gender
Undisclosed
HSC
N/A
i swear 5 could be A...
friggin wording is soooo fuckd! *protests*
....

:(
 

Constip8edSkunk

Joga Bonito
Joined
Apr 15, 2003
Messages
2,398
Location
Maroubra
Gender
Male
HSC
2003
i know what u mean frigid... i got misled by the wording too, i thought it asked for 2 different method to test TDS, so i just thought wtf and guessed A lol.... didnt even think about the whole procedure.. hahahahaha ...bah shit happens
 

eeyore

Member
Joined
Oct 20, 2003
Messages
203
arrrrrgh all the ones i was thinking about (and ended up changing), I changed to the wrong ones!!
 

Survivor39

Premium Member
Joined
May 23, 2003
Messages
4,467
Gender
Undisclosed
HSC
2003
OMG....people people......% cannot be A because "P" is used for titration, it CANNOT determine the total dissolved solid ANYWAY!
 

SoCal

Hollywood
Joined
Jul 5, 2003
Messages
3,916
Location
California
Gender
Male
HSC
2003
Why do I make such stupid mistakes:mad:?

1. B
2. D
3. B
4. D (I had B and then I changed it!)
5. D
6. A (How do you do this question?)
7. A (I had C which most people seem to think is correct!)
8. B
9. A
10. D (I had no idea but I feel so stupid now.)
11. B
12. B (Stupid again, what was I thinking?)
13. B
14. C
15. C (Don't ask!)

So that should get me only about 9/15, when I should have got 14/15 (I think):(.
 

sneaky pete

Member
Joined
Aug 8, 2003
Messages
141
Location
sydney
Gender
Undisclosed
HSC
N/A
Had exactly the same as first poster except I got #11 wrong (brain lapse i guess).

Hope first poster is right!
 

pdarkness

Socialist weasel
Joined
Sep 28, 2003
Messages
28
Location
Canberra
Gender
Male
HSC
2003
Here is what i think are the right answers
1.(B)
2.(D)
3.(B)
4.(B)
5.(D)...filter suspended soilids, then evaporate.
6.(C)
7.(C) basic metal oxides react with acids to make salts etc..only U or V would be amphoteric
8.(A) as mentioned before, double concent, then -log(H+)
9.(A) i put C in the test and forgot the whole alphabetical stuff
10.(A)... it says based on these data ALONE
11.(B)
12.(D) it seems its right, but can someone tell me how you actually do it!?
13.(D) 1. X>Y 2. Z>Y 3. X<Z therefore, Z>X>Y
14. (dont know, pretty hard)
15. (dont know, i was told its C because after initial shock, buffer maintains constant pH)
 
N

ND

Guest
Originally posted by pdarkness
Here is what i think are the right answers
1.(B)
2.(D)
3.(B)
4.(B)
5.(D)...filter suspended soilids, then evaporate.
6.(C)
7.(C) basic metal oxides react with acids to make salts etc..only U or V would be amphoteric
8.(A) as mentioned before, double concent, then -log(H+)
9.(A) i put C in the test and forgot the whole alphabetical stuff
10.(A)... it says based on these data ALONE
11.(B)
12.(D) it seems its right, but can someone tell me how you actually do it!?
13.(D) 1. X>Y 2. Z>Y 3. X<Z therefore, Z>X>Y
14. (dont know, pretty hard)
15. (dont know, i was told its C because after initial shock, buffer maintains constant pH)
Yep i got the same, with:

14. C
15. A
 

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

Top