₦airaland Forum

ProfChris10: ok. now first we have that
CaCl2--->Ca2+ + 2Cl- now x=1 and y=2 now the formular says solubility is given by

sb=(ksp/x^x. y^y)^[1/(x+y)]
so we have now that sb=[(1.08*10^-7)/(1^1 * 2^2)]^[1/(1+2)]

so, sb=[(1.08*10^-7)/(1*4)]^(1/3)

sb=(2.7*10^-^(1/3)

that means you will find the cube root of 2.7*10^-8 when you do that you get your final answer as 3*10^-3mol/dm3

,,,,waw tanx......so dat means if we given da solubity and told to find d product....we gna mak ksp sub of 4mula rit?....givin ksp=sb(x^x . Y^y)^(1/x+y) rit?

tshabalala: I taught as much but can't i use agric in lieu of bio?

...yea u can bt it depends on d couse u gng 4.....

ProfChris10: or perhaps you can drop your question lets tackle it with this formular

...taanx dude....da solubility product of a sparinly soluble salt CACL2 is 1.08 * 10^-7 mol^3dm^9....wats da solubility of d salt....pls strictly with da fmula o...wana no hw to apply it

Op u sa ad bio in waec sa....and if nt....engineerin cours is beta cous ur physics na die o.....dey also rot out standin in som of my fwends result tinkin it will b Gud...bt d highest was a c5 in phy..ur resultsz gud o..bt if bio was der..it would av bin balancd

davidcarson: hope u guys are preparing 4 d exam?

...am sure dose fierce lookin lecturas will av bin submitin der heart shakin questions....Baba God....na ur palm i dey o

ProfChris10: I love the topic well well. make sense o, the topic sweet. one scholar tutor give us one bad formular to take kill solubility product any how dem set am

........plz tell me da formula na......dnt av prob wit calculatin da solubilty product itself bt..d prob is wen dey give us da solubility product and tell us to find da solubility...any general rule or formula 4 dat 2?

Dey jusy love questions on solubility product

Dis oau pume question sef...even waec cant even set dis kind chem calculatn 4 der theory questn...arrgh!.....

Me........

pegin 180 4 cut off mark still makes no diff to me.so will dibu expect state and federal uni to both b reducd to dat?...bt i trust 5 federal uni(oau,u.i,uniben,unilag,unilorin)......dey will neva accept 180 4 der cut off mark.....mark my words...

lolz...wat gav u da assuranc dat d mark dept has nt been added to ur initial score

tension soaked!!! Ý must it b july 13!!!

buzyguy: Ah,if na petrl fire sef e 4beta

...abi na oau set u ablaz?

buzyguy: Layelaye,persn wey wan downgrade d fever causing xam goe catch fire!!me sef wey Ha no downgrad ham caught fire yrz ago,let alone degraderz.sebi we na goe see,i pray we aspirntz here all pass nd get in.

lolzzz..hw u catch fire? Na petrol u dey tak baf

Daviyd: show all working

xinc d fram is half d width of da rectangle...dats 8/2...sinc area is l*b...so we av 4*5...=20

Daviyd: A substance has a half life of 3min. After 6min,the count rate was observed to be 600. What is its count rate at zero time?

sinc da half life is 3m..it means alf of d atom will decompos every 3m..so in six minut..it remains 600..dat means in 3 minute..it was 1200....so in 0 minute.. It will b 2400

Hausa: luck? Are u kidding me?
Does oau postume look like a futball match?

guy..i want u to accept d fact dat luck also exist in admission ......and i dnt deny d fact dat oau pume is nt beans...bt all doesnt depend solely on readin efficiency....bt God..and if God is by one's side...all once wishes will always luke like luck or magic wen tinz ar workin out at one's advantag..at least sm dnt merit admission last year bt wer given cause dey wer fortunat to beat da cut off even dou dey dnt prepar 4 it...dats wat we call luck cause God is by der side

Daviyd: A rectangle,8cm by 5cm is covered by a frame 1/2cm wide. What is the area of the frame?

20cm

20cm

Mcdowell: Please does anyone know if the sale Jamb's change of institution form is yet on sale

2 l8t bro

Prince adebayo: D answers are
1.D
2.C
3.C
4.C
5.D
6.C
7.D
8.D
9.C
10.D
samueldona=>10/10
kendzyma =>9/10
daviyd =>9/10
oyestephen=>8/10

...tnx ..forgoten nucleus only contains proton and neutron and electrons orbitin round it..anoda question

Waw...wat of phamacy...

Fynestboi: txtbk last opened APRIL 25TH 2013, oau pume is waiting to disgrace

..bobo its nt all dat read dat had up to 200 last year in oau pume...our skul head boy last year ad 198 even though e read like all is life dependd on it....still ntg avin d lowest in chem...(28)....bt still a guy in is class last year ad 282 and if u talkin of expo scholar...is number 1...av neva sin im readin..yet e scapd tru and was admitd for biochem...so all dose nt depend on hw efficient u ar in readin...it all depends on God and luck...so dnt mock dos who ar yet to read 4 da post ume cause luck mit b on der side...i guess we should all learn frm da just concluded utme

Fynestboi: at last i dn c mai coursemate u re ok bt u putng them as 2nd choice na war oo lets tak more on 2go::: just add Adexistic.

...wetin b d cut off 4 pharmacy and phylosophy

emmyeuler1: PREDICT THE GEOMETRY OF THE FOLLOWING COMPOUNDS USING VSEPR THEORY(I)XeF4 (II)PCl5 (III)SF6

...1..tetrahedral avin lone pair of zero and bond pair of 4,....2...trigonal bipyramidall...avin a lone pair of zero and a bond pair of 5.....3....octahedral avin a lone pair of zero and a bond pair of 6

Johntosyne: diz ur quesnz gidi gan o o o

.....tetrahedral......trigonal bipyramidal....octahedral

i av a link to download oau question free of charg....all questions includin current affairs and explanation to ansas...bt its a pdf file xo i dnt tink it can open on java fones...irs only 1.5mb

lolz....settin cut off marks cant make any diff..sinc d man siad dat da mass failur was d fault of d student..dat means he wunt consider dose who faild wen settin da cut off marks for each uni....i tink iz still gna set 200 for som federal uni

Prince adebayo: CHEMISTRY
1.Which of the following gases dissolve in water vapour to produce acid rain during rainfall
A.oxygen
B.carbon(ii)oxide
C.nitrogen
D.sulphur(iv)oxide
2.Which of the following substances is not a homogenous mixture?
A.filtered sea water
B.soft drink
C.flood water
D.writing ink
3.The nucleus of the isotope tritium contains
A.two neutrons with no protons
B.one neutron and one proton
C.two neutrons and one proton
D.two neutrons,one proton and one electron.
4.Which of these is an acid salt?
A.K2SO4Al2(SO4)3.24H20
B.CuCO3,Cu(OH)2
C.NaHS
D.CaOCl2
5.Alkanals can be differentiated from alkanones by reaction with
A.2,4 dinitrophynythydrazine
B.hydrogen cyanide
C.sodium hydrogen sulphite
D.tollen's reagent
6.The carbon atoms in ethene are
A.sp3 hybridized
B.sp hybridized
C.sp2 hybridized
D.not hybridized
7.Duralumin consist of aluminium,copper
A.zinc and gold
B.lead and manganese
C.nickel and silver
D.manganese and magnesium
8.Which of the following is not used as a raw material in solvay process
A.ammonia
B.sodium chloride
C.calcium trioxocarbonate(iv)
D.sodium trioxocarbonate(iv)
9.which of the following gases will rekindle a brightly glowing splint?
A.NO2
B.NO
C.N2O
D.Cl2
10.The major component of the slag from the production of iron is
A.an alloy of calcium and iron
B.coke
C.impure iron
D.calcium trioxosilicate(iv)
GOODLUCK!!!

....D,C,D,C,D,C,D,D,C,D.......tell me my score o...bt m sure of every fin