Howd you go on the chem exam?

[doter]

WHICH REACTANT WAS IN EXCESS QUESTION. the one where you mix urea and water. did everyone say water and reason because the reaction will completely occur with the urea

Yeh I wrote water but u didn't have to give a reason, did you?

[98.40_for_sure]

WHICH REACTANT WAS IN EXCESS QUESTION. the one where you mix urea and water. did everyone say water and reason because the reaction will completely occur with the urea

Water to ensure that all of the piss will react into products

[Shark 774]

fuel cells CAN be recharged.... thus only D is correct...

just because they are not recharged in practice, doesnt mean they cant be recharged..

a new twist, i like it.

I hate it, stupid VCAA. A lot of the reasoning behind unit 4 is putting chemistry into practice in the real world/industries. Then they ask a question that is just possible, not practical. GRR!

[mankay]

I just said concentration of H30+  = concentration of lacitic acid ions or w/e

I hope this is right

Im fairly sure thats not an assumption, its a fact.

I said that you assume the change in [lactic acid] is neglible

[lisafaustina]

i said the temperature was atmospheric temp...

[_henwee]

WHICH REACTANT WAS IN EXCESS QUESTION. the one where you mix urea and water. did everyone say water and reason because the reaction will completely occur with the urea

Water to ensure that all of the piss will react into products

Such a nice way to put it. ^^"

[lisafaustina]

i didnt get that excess question. i simply thought it would be urea cos its molar mass is larger LOL i didnt think at all....what a retard

[whyareyoureadingthis]

GAS PRODUCED= HIGH PRESSURE = BATTERY BURSTS

This.
2Li(s) + 2H2O(l) ---> 2LiOH(aq) + H2(g)
...or that's what I got anyway. Correct it if necessary.

[andy456]

Damn.... i stuffed up the lithium water question.........
wrote the wrong equation

[10weid]

I just said concentration of H30+  = concentration of lacitic acid ions or w/e

I hope this is right

Im fairly sure thats not an assumption, its a fact.

I said that you assume the change in [lactic acid] is neglible

i said the assumption is that all of the lactic acid dissolves in the solution...

[kenhung123]

[lactic acid] at equilibrium=[lactic acid] initially i.e. the ionisation of lactic acid is to a very small extent

[whyareyoureadingthis]

Damn.... i stuffed up the lithium water question.........
wrote the wrong equation

Don't take my answer as the right one necessarily... just what I got.

[98.40_for_sure]

Mm... was it lithium oxide or lithium hydroxide? Li2O or LiOH?

[Studyinghard]

Does anyone remember their CF value. i got 12494.05 J/C-1

[10weid]

Does anyone remember their CF value. i got 12494.05 J/C-1

yeahhhh i got 12.5 KJ per C