₦airaland Forum

Gud calculatn,bt da questn z frm the hot end...nt frm the cold end.i bliev u wld get the final ansa wif dat.

joseboy199: 20-0/50-0=C/100
cross multiply
c=20*100/50
c=40deg.celcius
ans is A

A lagged steel bar of length 50cm has its ends immersed in melting had and boiling water.the temperature at a point 20cm from the hot end is, (a)40degcelsius (b)50deg.celsius (c)60deg.celsius (d)80deg.celsius

A lagged steel bar of length 50cm has its ends immersed in melting had and boiling water.the temperature at a point 20cm from the hot end is, (a)40degcelsius (b)50deg.celsius (c)60deg.celsius (d)80deg.celsius

A force of 100N is used to push a body up a plane inclined at an angle 15deg to the horizontal.if one-half of the work done by the force is used in overcoming friction,the weight of the body in newtons is, (a)50/sin15deg. (b)50 sin15deg. (c)100/sin15deg. (d)100 sin15deg.

A body of weight 50N in air displaces 3.7kg of water when partially immersed in it.The upthrust on the body is, (a)8.7N (b)13.0N (C)37.0N (d)87.0N

Sister chromatids are: (a)two identical copies of a single chromosome produced during s-phase (b)pairs of chromosomes (c)points of attachments of centromeres to the chromosomes (d)chromosomes foumd in cells of sisters

Which of da following organs is located at the RUQ of da abdomen? (a)stomach (b)liver (c)duodenum (d)appendix

When 70cm3 of 3.0mol/dm3 Na2CO3 is added to 30cm3 of 1.0 mol/dm3 of NaHCO3,the concentration of Na+ ions in mol/dm3 in solutn is, (a)1.5 (b)4.5 (c)2.5 (d)3.5

The orbitals dat overlapp in chlorine molecule are?a)s & p (b)p & p (c)s & s (d)none

Valence shell electron pair theory through hybridizatn predict that sulphur(iv)oxide is?(a)bronted-lowry acid (b)lewis base (c)arrhenius acid (d)lewis acid

Hmm,vry correct.u may xplain hw if u cn!thks

Obinnau: the ansa is C

Thks in advnce 4 brnging killer questnz,wich r gonna get rid of failure nd xam imbalance.we r waitn...

edreesabiodun: Good job Mayorall, T.boy Buzyguy and others. Coming with some killer questions...

Thks in advnce 4 brnging killer questnz,wich r gonna get rid of failure nd xam imbalance

edreesabiodun: Good job Mayorall, T.boy Buzyguy and others. Coming with some killer questions...

Neva rest til afta jamb,evn afta na little rest o cuz putme stil dae queue.i foresee notn lez dan 300 in jamb 4 evry1 visitn ds thread eida u lyk it or nt!

Mbbs,i already knw urz EEE rite?datz great,may God help us in 4 our desired coursez.AMEN! 1nce again am vry sori in all av gone wrong.thks!

ANDREW2EIC: Apology accepted. I also sincerely tender my apology to you. I didn't mean to insult or debase ur integrity. We can stil be friends. Ehee! Before i forget, which course are u aspiring for? Nice weekend!

WOW,av missd alot!when A+B Reacts to giv AB As the product,the ethalpy chang z -540kj with activatn energy (Ea) 142kj.The energy for the dissociation of product AB in kj is?(a)146 (b)-540 (c)682 (d)398

Am nt oo,i mean ansa is electrolytc cathodic protectn with zinc made da cathode nd iron mad da anode

mayorall: Boss you are confused...option A is electrolytic and you saying the reaction is electrochemical....Option B is one of the uses of electrolysis....remember not all answers in the past questions are correct...

U r 2correct bro

mayorall: moles = no of particles/6.02 * 10^23

2 = particles/6.02 * 10^23
particles = 2 * 6.02 * 10^23

particles = 12.04 * 10^23

or 1.204 * 10^23

Give options next time please...

Dat 1mole of hydrogen molecule means 2moles of hydrogen atom in orda to b clearer

buzyguy: Very correct nd more xplanatory,thks!

Very correct nd more xplanatory,thks!

Tizzie: 1mole of Hydrogen =H2,so no. Of atoms should be=2x(6.02x10^23)avogardro's constant.

U tried broz cuz i learn more wif what u wrot,l meanz subsidiary or azimuthal,m means magnetic,n is da principal quantum numb.,s z spin in both directn.hop u already kw dat,so dat n=4 dat is shell numba 4,elements dat fall in shell numb. 4 are potassium nd calcium among da 1st 20elemnts,we wil se dat potassm has only one 4s electrn wich means it spins in a single direction,wich z s=+1/2 or -1/2,bt da questn says s=+1/2 & -1/2 wich z calcium,it hz two 4s electrns wich spin in both directn.hop itz clear 2 us.thkz 4 attempt bro

larri: berylium since
l=0 s orbital(group 1 and 2)
l=1 p orbital(group3-0)
l=2 d orbital(transition element)
l=3 f orbital(lanthanide n actinide)
l=4 g orbital

U tried broz,l meanz subsidiary or azimuthal,m means magnetic,n is da principal quantum numb.,s z spin in both directn.hop u already kw dat,so dat n=4 dat is shell numba 4,elements dat fall in shell numb. 4 are potassium nd calcium among da 1st 20elemnts,we wil se dat potassm has only one 4s electrn wich means it spins in a single direction,wich z s=+1/2 or -1/2,bt da questn says s=+1/2 & -1/2 wich z calcium,it hz two 4s electrns wich spin in both directn.hop itz clear 2 us.thkz 4 attempt bro

larri: berylium since
l=0 s orbital(group 1 and 2)
l=1 p orbital(group3-0)
l=2 d orbital(transition element)
l=3 f orbital(lanthanide n actinide)
l=4 g orbital

We r gonna mak it to awa desired sklz nd courzez ijn,so pls letz wish ourselvez gud so far we av sam pursuit here-academicz God help us all oo!

We r gonna mak it to awa desired sklz nd courzez ijn,so pls letz wish ourselvez gud so far we av sam pursuit here-academicz God help us oo!

Thkz boz,u r rite!

joseboy199: number of particles=mole*avrogrado constant(6.02*10^23)

Hmm,thk God u brng out wotz in ur mind.WELL,lemi tel u sumtyn 2day nt evrybdy u seek admssn wif or u fall in sam life issue r supozd to be ur mind..do u rememba ur quote dat i mak a baseless argument,of courz datz 2ridiculouz 2my persnalty..i wz silent cuz i knw itz nairaland tnz nd u r free to say worefa u wish here.wot do think?if nt of my dream courz wich i stil av in mind,nd determd to pursue afta completn a degr i dnt fink i shld b here absorbn insultz frm an anönymouz fellow here.i sense u r da one being discourteouz.i shld say sumtn bt i dnt jst wonu offend any1 here ,life z more dan dat..so chang dat ur mentality,ltz nt a fight.ds thread z for a purpoze so let faze.i apologize 4 callin u a boy cuz evn kidz nw adayz reject such,letz bury da hatchet.peace! Itz A bro,mayb u didnt read it wel chck bak tru it.thkz

ANDREW2EIC: Guy u really called me boy? What a disrespect! Well, the answer to ur question is B).

Hmm,thk God u brng out wotz in ur mind.WELL,lemi tel u sumtyn 2day nt evrybdy u seek admssn wif or u fall in sam life issue r supozd to be ur mind..do u rememba ur quote dat i mak a baseless argument,of courz datz 2ridiculouz 2my persnalty..i wz silent cuz i knw itz nairaland tnz nd u r free to say worefa u wish here.wot do think?if nt of my dream courz wich i stil av in mind,nd determd to purse i dnt fink i shld b here absorbn insultz frm an anönymouz fellow here.i sense u r da one being discourteouz.i shld say sumtn bt i dnt jst wonu offend any1 here ,life z more dan dat..so chang dat ur mentality,ltz nt a fight.ds thread z for a purpoze so let faze.i apologize 4 callin u a boy cuz evn kidz nw adayz reject such.peace!

ANDREW2EIC: Guy u really called me boy? What a disrespect! Well, the answer to ur question is B).

Itz electrochemical wen zinc acts as the anode nd fe,cathode bcuz znc z grter dan iron in da e.c.e series.i bliev u already knw dat,nd electrolytc wen znd z cathode nd iron z anode...u knw wen u get to electrolytc cells,itz alwyz reversed to da combinatn in electrochmical cell.hop it makz sense?!

mayorall: B is the answer as zinc have to lose electrons xo etas to be the anode as the positive electrode...The process is called galvanisation...

Itz electrochemical wen zinc acts as the anode nd fe,cathode bcuz znc z grter dan iron in da e.c.e series.i bliev u already knw dat,nd electrolytc wen znd z cathode nd iron z anode...u knw wen u get to electrolytc cells,itz alwyz reversed to da combinatn in electrochmical cell.hop it makz sense!

mayorall: B is the answer as zinc have to lose electrons xo etas to be the anode as the positive electrode...The process is called galvanisation...

Hw many atoms r there in 2moles of hydrogen moleculez? Itz calculatn o

Hmm,wel itz A ba3 low giv reasn lata

mayorall: B is the answer as zinc have to lose electrons xo etas to be the anode as the positive electrode...The process is called galvanisation...

Which atom likely possez da following:n=4,l=0,m=0 nd s=+1/2 nd -1/2.