buzyguy: Hmm,i tnk itz energy over volume nau.chck it wel nt area.

THAT WAS HOW IT WAS WRITTEN IN NELKON AND PARKER....AND UNIVERSITY PHYSICS....OR ARE THE AUTHORS WRONG?

buzyguy: 50cm3 of 0.10mol/dm3 Hcl solutn z mixed with 50cm3 of 0.15mol/dm3 NaoH Solutn.what z the pH of da resulting solution?

NO. OF MOLE OF HCL=(50/1000)*0.10=0.005 moles.....NO. OF MOLE OF NaOH=(50/1000)*0.15=0.0075moles...THIS MEANS THE RESULTING SOLUTION WILL BE BASIC BY 0.0075-0.005=0.0025moles.....volume of resulting solution=50cm3+50cm3=100cm3=0.1dm3............molar conc of resulting soln=0.0025mole/0.1dm3=0.025mol/dm3...pOH=-LOG[0.025]=1.6...PH OF RESUL SLN=14-1.6=12.4

what is the general formula for grignards reagent?

WHAT IS THE SENSITIVITY OF AN AMMETER WITH A DEFLECTION OF PIE/4 AND MEASURING A CURRENT OF 2mA...

1. Which of this is a materials for d smelting of iron ore in a blast furnace A.CaCO3 B.Zn(NO3)2 C.CuSO4 D.AlCl3 E. CaSo4
2.Which of this silver halide salt is readily soluble in ammonium hydroxide A.AgI B. AgBr C.AgCl D. AgF.
3. Chlorine,bromide and iodine resemble each other in that all A.dissovle in alkalis B. React violently with hydrogen without heating C.displace each other from solutions of their salts D.are gases E.are liquids.

emmyeuler1: what is the general formula for grignards reagent?

C6H5MgBr(alkyl group and benzene and the halogens) general formula RMgX R is benzene X is d halo group

Alkylmagnesiumhalides,CnH2n+1mgX WHERE X z da halide

emmyeuler1: what is the general formula for grignards reagent?

buzyguy: Alkylmagnesiumhalides,CnH2n+1mgX WHERE X z da halide

MY MENTOR U'RE CORRECT

1-A,2-C,3-C

larri: 1. Which of this is a materials for d smelting of iron ore in a blast furnace A.CaCO3 B.Zn(NO3)2 C.CuSO4 D.AlCl3 E. CaSo4
2.Which of this silver halide salt is readily soluble in ammonium hydroxide A.AgI B. AgBr C.AgCl D. AgF.
3. Chlorine,bromide and iodine resemble each other in that all A.dissovle in alkalis B. React violently with hydrogen without heating C.displace each other from solutions of their salts D.are gases E.are liquids.

Ahh,'mentor?' sebi na u dae teach me nd correct me 4here.abeg mak pple no hear o,vry funny.

emmyeuler1: MY MENTOR U'RE CORRECT

larri: 1. Which of this is a materials for d smelting of iron ore in a blast furnace A.CaCO3 B.Zn(NO3)2 C.CuSO4 D.AlCl3 E. CaSo4
2.Which of this silver halide salt is readily soluble in ammonium hydroxide A.AgI B. AgBr C.AgCl D. AgF.
3. Chlorine,bromide and iodine resemble each other in that all A.dissovle in alkalis B. React violently with hydrogen without heating C.displace each other from solutions of their salts D.are gases E.are liquids.

QUE1.ANS A....QUE2.ANS D.....QUE3.ANS.C

larri: C6H5MgBr(alkyl group and benzene and the halogens) general formula RMgX R is benzene X is d halo group

CORRECT!

Chai,u r too correct!

emmyeuler1: NO. OF MOLE OF HCL=(50/1000)*0.10=0.005 moles.....NO. OF MOLE OF NaOH=(50/1000)*0.15=0.0075moles...THIS MEANS THE RESULTING SOLUTION WILL BE BASIC BY 0.0075-0.005=0.0025moles.....volume of resulting solution=50cm3+50cm3=100cm3=0.1dm3............molar conc of resulting soln=0.0025mole/0.1dm3=0.025mol/dm3...pOH=-LOG[0.025]=1.6...PH OF RESUL SLN=14-1.6=12.4

buzyguy: Chai,u r too correct!

WHERE U ABLE TO CONFIRM THE FORMULA 4 ENERGY DENSITY BY BROWSING?...I WILL BE EXPECTING UR FEED-BACK

Yeah,afta much argumnt on it...a lecturer said it isnt so for advnce dealns.i guez ur txt z fundament physcz

emmyeuler1: WHERE U ABLE TO CONFIRM THE FORMULA 4 ENERGY DENSITY BY BROWSING?...I WILL BE EXPECTING UR FEED-BACK

buzyguy: Yeah,afta much argumnt on it...a lecturer said it isnt so for advnce dealns.i guez ur txt z fundament physcz

PLEASE CAN U GIVE ME UR NUMBER...MINE IS 08037841556...LET US RELATE....!

A chloroform solutn of pure organic compound was spotted at a distanc 0.80cm frm the base of a 20cm long chromatoplate.if the compound has the rf-value of 0.505 and movez half way up the 20cm long plate,what z the distance of the solvent front from the top of the plate upon elution?

I wil giv u a call.am demobobo on 2go,if u r there!

emmyeuler1: PLEASE CAN U GIVE ME UR NUMBER...MINE IS 08037841556...LET US RELATE....!

Let questns com in plss!

emmyeuler1: QUE1.ANS A....QUE2.ANS D.....QUE3.ANS.C

2/3 question 2 is c

buzyguy: 1-A,2-C,3-C

u got dem right 3/3

buzyguy: A chloroform solutn of pure organic compound was spotted at a distanc 0.80cm frm the base of a 20cm long chromatoplate.if the compound has the rf-value of 0.505 and movez half way up the 20cm plate,what z the distance of the slvent from the top of the plate upn elution?

BROS THIS IS ADVANCE OOO...THIS IS NOT JAMB SYLLABUS AT ALL...R.F=DIS MOVED BY SOLUTE 4RM BASE LINE/DIST MOVED BY SOLVNT 4RM BASE LINE TO BE CONTINUED IN MY NEXT POST

CONTINUATION....r.f=distance moved by solute 4rm base ine/distance moved by solvent from base line........0.505=9.2/x.....x=18.2cm.....DISTANCE OF SOLVENT FRONT FROM TOP OF PLATE=19.2-18.2=1cm

emmyeuler1: what is the general formula for grignards reagent?

R-Mg-X(Alkyl magnesium halide)

What are the constituent and uses of lucas reagent?

Mbahchiboy: What are the constituent and uses of lucas reagent?

ZnCL2+ HCL....IT IS USED IN THE TEST TO DISTINGUISH BETWEEN PRIMARY,SECONDARY AND TERTIARY ALKANOLS

Hmm,vry correct i lov dat.

emmyeuler1: CONTINUATION....r.f=distance moved by solute 4rm base ine/distance moved by solvent from base line........0.505=9.2/x.....x=18.2cm.....DISTANCE OF SOLVENT FRONT FROM TOP OF PLATE=19.2-18.2=1cm

20cm3 of co are mixed and sparked with 200cm3 of air containing 21% of o2.what is the total volume of the resulting gases if all volumez are measured at s.t.p? A.179cm3 b.200cm3 c.210cm3 d.220cm3

Ah,no o so far jamb cld ask what lucarz reagent z used for as test...2009 i cn remember.

emmyeuler1: BROS THIS IS ADVANCE OOO...THIS IS NOT JAMB SYLLABUS AT ALL...R.F=DIS MOVED BY SOLUTE 4RM BASE LINE/DIST MOVED BY SOLVNT 4RM BASE LINE TO BE CONTINUED IN MY NEXT POST

What happenz to the conductivity of an electrolyte as itz concentration reducez? It,a.decreasez b.is unaffected c.decreases d.reduces to zero

(1)What happenz to the conductivity of an electrolyte as itz concentration reducez? It,a.decreasez b.is unaffected c.decreases d.reduces to zero (2)what happenz to da molar conductivity if da concentratn z reducez by a factor 4. It, A.increasez by 2 b.increasez by 4 c. Decreasez by 2 c.decreasez by 4

Ca3(po4)2 is a sparingly soluble salt in water.the molar solubility of the salt in termz of itz solubility product,ksp,is given by: a.[ksp/108]^1/3 b.[ksp/108]^1/5 c.[ksp/36]^1/3 d.[ksp/36]^1/5