lol bil qalb kolla :P

*whips*

xD =P

Goood luck

MINTS !!!!!!!!!!!!!!!!!!!

I know this is not the place to discuss chemistry, imma i couldn't reach you in any other way. I hope this helps you out ^^. Ciawww

(A)

Equations:

BaCl2 + SO2 + H20 (H2SO3)

BaCl2 + H2O + SO2 ==> BaSO4 + 2 HCL

BaSO3 + MnO4- + H+ ==> SO4 2- + Mn 2+

MnO4 - + Fe 2+ ==> Fe 3+

Half equations

(1)

MnO4 - + 8 H+ + 5 e- ==> Mn 2+ + 4 H20
(Fe 2+ ==> Fe3+ + e - ) x5

Ionic : 5 Fe 2+ + MnO4- + 8H+ ==> Mn2+ + 5Fe 3+ + 4H20
0.005M 3.4x10-5 moles (unreacted)
34cm
1.17x10-4 moles

Originally 50cm3 KMnO4 of 0.001M

Therefore: 5x10-5 - 3.4x10-3 ==> 1.6x10-5 moles

(2)

(SO3 2- + H2O ==> SO4 2- + 2H+ + 2e-) x5
(MnO4- + 8H+ + 5e- ==> Mn2+ + 4H20) x2

Ionic: 5SO3 2- + 2MnO4- + 5 H2O + 16H+ ==> 5 SO42- + 2 Mn2+ + 10H+ + 8 H2O
1.6x10-5 moles

therefore moles SO3 = 4x10-5 (as ratio SO3 : MnO4- is 5:2)

SO2 : BaSO3
1 : 1

therefore 4x10-5 in 100dm3

(C)

There could be other impurities that react + more importantly it would have nothing to weigh as the compound would be soluble.

(D)

Because one would also have BaSO4

steph ibatli l pics ta us asleep at ur house lol i wanna see mine with the pillow holdin the boob :D

aahh xgost inhobb ekk jien ta!
u jien listess lilek ha namel tibzax issssa taraaaaa !!

I think im finally out of rehab ;)

Stefanja! taf li qas kont addjata fuq hi5 tieghi... impossible ah !

Anyways, if you haven't read the message I left you on facebook, tonight we're all meeting at pv... turns out pv on weds are far more enjoyable. Urm, and btw... mhux ovja li mhux tieghi dik il-kurnuna! Imma issa mhux armani, lacoste qed nintefa, itszeeshit :)

Toodles.. u cu - bil-fors

Heyy
it was nice meeting u 2:) naah not too much shit just a little pissed off hehe yeah it was worth it xD tc cyyaa xxx

heeeeeeeeeeeyy stef
remeber meee at pv fil bathroom ta burger king last saturday??? :P
rajtek kif sibtek fuq hi5 provaa li ma kontx hara :P haaaaaaahaaaaa tc puwpaaaaaa cyaaaa saturday pv uekk
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Btw, this really helped me aswell.

http://www.dayah.com/periodic/

Saves a lot of time when it comes to bonding, periodicity, shapes, electronic config etc.

i'm fine, if you need any help .... :)

Btw, I'm sure you'll do just fine ta'. Study from ramsdon, i owe that book my grade hehe ;)

aw although with had a very brief 're-union' last sat, t'was still fun, glad to see you again, mintloxx :)

Hey sex bomb :)
hadt gost li rajtek ukoll is sibt Squadron. kien party sabih uuxx :))

jien nisbieh u int ukoll taaa :DD
keep on smiiiliin paparrapaaa :)
xxxxxx

Ten-Cue Steffie beffie

nic photos hi
keep it up