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Nairaland Forum / Nairaland / General / Education / Online tutorial in Physics, Chemistry, Maths for Jamb and pume (50370 Views)
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Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 3:13pm On Apr 15, 2013 |
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? 1 Like |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 4:22pm On Apr 15, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 4:42pm On Apr 15, 2013 |
what is the general formula for grignards reagent? |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 4:47pm On Apr 15, 2013 |
WHAT IS THE SENSITIVITY OF AN AMMETER WITH A DEFLECTION OF PIE/4 AND MEASURING A CURRENT OF 2mA... |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by Nobody: 5:16pm On Apr 15, 2013 |
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. |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by Nobody: 5:30pm On Apr 15, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 5:31pm On Apr 15, 2013 |
Alkylmagnesiumhalides,CnH2n+1mgX WHERE X z da halide emmyeuler1: what is the general formula for grignards reagent? |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 5:38pm On Apr 15, 2013 |
buzyguy: Alkylmagnesiumhalides,CnH2n+1mgX WHERE X z da halideMY MENTOR U'RE CORRECT |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 5:44pm On Apr 15, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 5:47pm On Apr 15, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 5:47pm On Apr 15, 2013 |
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. CaSo4QUE1.ANS A....QUE2.ANS D.....QUE3.ANS.C |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 5:50pm On Apr 15, 2013 |
larri: C6H5MgBr(alkyl group and benzene and the halogens) general formula RMgX R is benzene X is d halo groupCORRECT! |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 5:54pm On Apr 15, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 6:09pm On Apr 15, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 6:17pm On Apr 15, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 6:26pm On Apr 15, 2013 |
buzyguy: Yeah,afta much argumnt on it...a lecturer said it isnt so for advnce dealns.i guez ur txt z fundament physczPLEASE CAN U GIVE ME UR NUMBER...MINE IS 08037841556...LET US RELATE....! |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 6:36pm On Apr 15, 2013 |
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? |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 6:39pm On Apr 15, 2013 |
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....! |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 6:43pm On Apr 15, 2013 |
Let questns com in plss! |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by Nobody: 9:29pm On Apr 15, 2013 |
emmyeuler1: QUE1.ANS A....QUE2.ANS D.....QUE3.ANS.C2/3 question 2 is c |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by Nobody: 9:31pm On Apr 15, 2013 |
buzyguy: 1-A,2-C,3-Cu got dem right 3/3 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 10:56pm On Apr 15, 2013 |
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 1 Like |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 12:18am On Apr 16, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by Mbahchiboy(m): 7:01am On Apr 16, 2013 |
emmyeuler1: what is the general formula for grignards reagent?R-Mg-X(Alkyl magnesium halide) |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by Mbahchiboy(m): 7:07am On Apr 16, 2013 |
What are the constituent and uses of lucas reagent? |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by emmyeuler1: 7:48am On Apr 16, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 7:50am On Apr 16, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 7:56am On Apr 16, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 7:59am On Apr 16, 2013 |
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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 8:10am On Apr 16, 2013 |
What happenz to the conductivity of an electrolyte as itz concentration reducez? It,a.decreasez b.is unaffected c.decreases d.reduces to zero |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 8:15am On Apr 16, 2013 |
(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 |
Re: Online tutorial in Physics, Chemistry, Maths for Jamb and pume by buzyguy: 8:24am On Apr 16, 2013 |
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 |
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