EngrBello:

RateX/RateY= rootY mass/rootX mass X~Oxygen rate=15 and mass=16 ;. Y = methane(CH4) rate with mass 16 15/Y = root 16/root 16 15/Y= 1 Y =15 rate of methane diffusion is 15...

molar mass of oxygen gas is 32, is that correct?

Pes13:
molar mass of oxygen gas is 32, is that correct?

check the question again he said oxygen.oxygen is different from oxygen gas

luvbro:
check the question again he said oxygen.oxygen is different from oxygen gas

Iffa hear...tell us the difference sir...which one do we breathe in..oxygen or oxygen gas??

Hardebaryor:
Worst still, why is it only rursh that claims he got PQ from him as big as this forum is. Mind you rursh registered his nairaland account this year and he claims that he got the PQ from dunsin89 in 2015. How is that possible?

I wonder oo. I even find it hard to believe he is an aspirant this is just a faceless forum anyone can claim to be anything. @MrEgghead do you know him personally how do you come to believe that he has a first degree. seeing is believing

pls oh,someone should pls help me to send the screenshots of ui chemistry practice question......thanks

Aybalance:
Iffa hear...tell us the difference sir...which one do we breathe in..oxygen or oxygen gas??

lol ignorance go and read your textbook very well.can someone pls help him out

luvbro:
lol ignorance go and read your textbook very well.can someone pls help him out

lol no need for the ignorance talk although you are right because working with 32 gives a fun answer but quote me if am wrong sn't there methane and methane gas?

Rayman1000:
lol no need for the ignorance talk although you are right because working with 32 gives a fun answer but quote me if am wrong sn't there methane and methane gas?

methane is gas already oxygen can be solid,liquid or gss

Rayman1000:
lol no need for the ignorance talk although you are right because working with 32 gives a fun answer but quote me if am wrong sn't there methane and methane gas?

methane is gas already oxygen can be solid,liquid or gas

luvbro:
methane is gas already oxygen can be solid,liquid or gas

Aiit that means you are right because working with 32 gave 21.21...

Rayman1000:
Aiit that means you are right because working with 32 gave 21.21...

alright bro

Rayman1000:
Aiit that means you are right because working with 32 gave 21.21...

Remember it is diffusion of gases,so all are in gaseous state

luvbro:
lol ignorance go and read your textbook very well.can someone pls help him out

>:na wa o..you could have explain further instead of calling a fellow being ignorant...seems you are Mr know all...continue with the explanation sir...ur boi wants to learn

luvbro:
lol ignorance go and read your textbook very well.can someone pls help him out

>:na wa o..you could have explain further instead of calling a fellow being ignorant...seems you are Mr know all...continue with the explanation sir...ur boi wants to learn

The formula(from Grahams law of diffusion) that is being used here is only valid for gases, so it has to be a molecule of oxygen has with RMM 32. In fact, It should also be noted that an atom of oxygen(mass 16) cannot be considered in the context of diffusion. So, the calculation with 32 as the mass of oxygen up there is the correct answer

Thanks for the explanations sirs..The ignorant boy is learning...although i neva heard of solid oxygen...where do i get one?

Aybalance:
>:na wa o..you could have explain further instead of calling a fellow being ignorant...seems you are Mr know all...continue with the explanation sir...ur boi wants to learn

I purposely said that cus of the*iffa hear* u said it shows you don't want to learn

mathefaro:
The formula(from Grahams law of diffusion) that is being used here is only valid for gases, so it has to be a molecule of oxygen has with RMM 32. In fact, It should also be noted that an atom of oxygen(mass 16) cannot be considered in the context of diffusion. So, the calculation with 32 as the mass of oxygen up there is the correct answer

lol do you think those lecturers want anybody to pass,though have come across a question like that b4 and they missed it for everyone who calculated it using 32 as the weight.everyone should just be careful in calculating questions during exams

Aybalance:
Thanks for the explanations sirs..The ignorant boy is learning...although i neva heard of solid oxygen...where do i get one?

you can google it if you can't find it in your textbook

afoobabs:
I wonder oo. I even find it hard to believe he is an aspirant this is just a faceless forum anyone can claim to be anything. @MrEgghead do you know him personally how do you come to believe that he has a first degree. seeing is believing

I said maybe.

luvbro:
you can google it if you can't find it in your textbook

ok sir

luvbro:
I purposely said that cus of the*iffa hear* u said it shows you don't want to learn

lolz..Am sorry for that sir...i didnt know that i was dealing with one of the bosses...Am ready to learn now...

ElRapido:
Abeg guys help me o I sat for OOU putme and my name is now on the admission list and it's like am having 72hours to accept or forfeit the admission but once I accept I should forget about UI admission.

pls did you pick OOU as first or second choice cos I heard they are only considering those who pick them as first choice for now.

Aybalance:
lolz..Am sorry for that sir...i didnt know that i was dealing with one of the bosses...Am ready to learn now...

lol we both learning

chufor:
what a shock it's like this is where my problem lie..thanks people

pls when filling your bio -data
avoid the use of apostrophes (')
e. g when filling in your Examination Centre.

Thanks.

Physicist of the house! Try to solve this problem without using calculator.... A broadcasting station transmits at a frequency of 89.5MHz.what capacitance together with an inductance of 30uH is needed to tune to this station?.. Please be sincere with the question

ennydammy11:
Physicist of the house! Try to solve this problem without using calculator.... A broadcasting station transmits at a frequency of 89.5MHz.what capacitance together with an inductance of 30uH is needed to tune to this station?.. Please be sincere with the question

when tuning a radio set
we've resonant circuit.
Xl=Xc
2πfL=1/2πfC

F=89.5×10-³Hz
L=30×10^-6H
C=1/4π²×F²×L
C=1/4×10×89.5×10-³×89.5×10-³×30×10^-6
C=10^6×10³×10³/89.5×89.5×4×10×30
C=10^12/12×10²×8×10³
C=10^7/96
C=hmnn.. I've to use calculator at this point
C=1.04×10^5F

PS. I approximated some figures
I'm wrong..

Hi...guys..pls i need urgent answer..b4 tt close tumorow..wat du u.i mean by uploading olevel result for pple who changed course and about if your names is on admission portal of a thing..pls help mi and sace a soul..my name is not on the list by the way..cant login naw sef into ma acct..

I JUST login naw,it went.i saw that my bio data as been COMPLETED AND UPLOADed..du i still need to du anytin?

luvbro:
lol do you think those lecturers want anybody to pass,though have come across a question like that b4 and they missed it for everyone who calculated it using 32 as the weight.everyone should just be careful in calculating questions during exams

The bolded cannot be true, no way. No sane lecturer, that knows anything about chemistry at all, let alone one in UI will do this. It's true that lecturers might wanna test how smart a student is using tricky and technical questions, but it will ALWAYS be within the scope of the correct concept.
I repeat, the trick like you said, may be used in stoichiometry or other calculating parts of chemistry but not in this particular case of diffusion of gases.

NaturalWoman:


Rursh is a direct entry candidate, so are you. You guys share the same birth date. Egbon, we aren't twats, okay

I laff Swahiliciously(don't check that in the dictionary )

Pls you guys should stop mismatching my identity with that of dunsin89. check my my profiles well and compare to is, it's not similar in any way. It's when I knew him through a friend in 2015 who is a nairalander that I decided to register too, believing here is a goody world.