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Re: SCIENCE GURUS LODGE by Mikebis(m): 10:09am On Oct 25, 2013
Elliotwiz1: LMAO hahahahahahahaha grin
wat 4ni
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:10am On Oct 25, 2013
Nomski0: You've got the idea but you're not putting it in the right words. Try again......maybe? wink
u cn korect me instead
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:11am On Oct 25, 2013
Elliotwiz1: ethanol is soluble in water because of the presence of hydroxyl ...outch
#GBAM
I dnt nid to say anytin again
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:13am On Oct 25, 2013
Tenison96:

you're doing it all wrongly. Iron sinks cos its density is greater than that of water.


Sup y'all
sowie i did nt put it d way it supose to,buh i gv sm idea na
Re: SCIENCE GURUS LODGE by Nomski0(f): 10:16am On Oct 25, 2013
Mikebis: u cn korect me instead
Okay.

It all has to do with density and volume. Density and volume have an inverse relationship. The density of water is 1, a small iron rod has a small volume hence a large density > 1 hence it sinks. The ship has a very large volume with would mean a small density < 1 hence it floats.
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:16am On Oct 25, 2013
Rehnoy: Some are just here to make a fool of themself. Not bordered though.
kmon dude,y u alwas get harsh,nd mkn sm1 luks stupid,we are hr to learn nd we dnt nid to mock any one,nd dnt nid to claims dat we beta dan sm1 here,i blv every1 hr are ment to b frnds nd nt to get angry to each oda,no mr hard feelings.let respect each oda
Re: SCIENCE GURUS LODGE by Nobody: 10:17am On Oct 25, 2013
Mikebis: sowie i did nt put it d way it supose to,buh i gv sm idea na

You're absolutely right, but misplaced words grin
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:20am On Oct 25, 2013
Nomski0: Okay.

It all has to do with density and volume. Density and volume have an inverse relationship. The density of water is 1, a small iron rod has a small volume hence a large density > 1 hence it sinks. The ship has a very large volume with would mean a small density < 1 hence it floats.
d summary is,density of iron is grta dan dat of water.
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:20am On Oct 25, 2013
Tenison96:

You're absolutely right, but misplaced words grin
tanks bro
Re: SCIENCE GURUS LODGE by Nomski0(f): 10:22am On Oct 25, 2013
The gravitational constant varies from place to place on the earth's crust. Give a reason why.
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:26am On Oct 25, 2013
Mikebis: In a chemical rxt after 10s,10mol frm initial conc of 6mol of d reactant are dsapear.1.calculate d rate constbnt.2.calculate d half like.3.calculate d rate of reactn.
stll waitin 4 dis solutn,dnt tell me u skippn dis little calculatns in chemistry.kmon guz,u can do it,if u cnt,den tell me to do it,we are all learnin here
chai..na wa o,no 1 to do dis little clculatns
Re: SCIENCE GURUS LODGE by Nobody: 10:26am On Oct 25, 2013
Mikebis: tanks bro

My pleasure.
Re: SCIENCE GURUS LODGE by Nobody: 10:34am On Oct 25, 2013
Nomski0: The gravitational constant varies from place to place on the earth's crust. Give a reason why.

Varies cos of the earths topography.
Its minimum at the equator, and increases with latitude.
Re: SCIENCE GURUS LODGE by Nomski0(f): 10:36am On Oct 25, 2013
Tenison96:

Varies cos of the earths topography.
Not quite.
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:37am On Oct 25, 2013
Nomski0: The gravitational constant varies from place to place on the earth's crust. Give a reason why.
because weight is dtamin by gravity nd grauitx varies ova d facd of earth
Re: SCIENCE GURUS LODGE by Nobody: 10:38am On Oct 25, 2013
Nomski0: Not quite.

Just edited it. Read again
Re: SCIENCE GURUS LODGE by Nomski0(f): 10:41am On Oct 25, 2013
Mikebis: because weight is dtamin by gravity nd grauitx varies ova d facd of earth
I know it varies but why?
Re: SCIENCE GURUS LODGE by Nomski0(f): 10:43am On Oct 25, 2013
Tenison96:

Varies cos of the earths topography.
Its minimum at the equator, and increases with latitude.
Well its very true. But not the answer i was hoping for.
Re: SCIENCE GURUS LODGE by Nobody: 10:43am On Oct 25, 2013
Switching to biology.
What are Germ Layers?
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:46am On Oct 25, 2013
Nomski0: I know it varies but why?
because d earth is spherical
Re: SCIENCE GURUS LODGE by Mikebis(m): 10:52am On Oct 25, 2013
Tenison96: Switching to biology.
What are Germ Layers?
germ layer rfrd to as germ epithelium whch is a grp of cell formd during animal.we av 3 germs layer whch are ectodem d outer part,mesodem d mdle part nd endodem d ina part
Re: SCIENCE GURUS LODGE by Nomski0(f): 10:56am On Oct 25, 2013
Tenison96: Switching to biology.
What are Germ Layers?
Germ layers are germinal epithelium tissues. They are pronounced in vetebrates and are mostly involved in embryogenesis.
Re: SCIENCE GURUS LODGE by IamSylva(m): 10:56am On Oct 25, 2013
FrancisTony: Mehn, this group is cool and i need a cracking chemistry question.
chemistry?
Here u go


An unknown compound
contains only carbon,
hydrogen, and oxygen.
Combustion of 7.50 g of this compound
produced 11.0g of carbondioxide and 4.50 g of water. How much C and H were in the original sample?


Good morning gurussmiley
Re: SCIENCE GURUS LODGE by Nobody: 10:59am On Oct 25, 2013
Nomski0: The gravitational constant varies from place to place on the earth's crust. Give a reason why.
because the earth isn't a perfect sphere ...itz flattened at d poles, hence, the distance from d suface, to the center of gravity of the earth, varies at different locations ....in othr wordz ....since itz flattened at the poles, the poles are closer to the centre of gravity, so the pull will be felt more at the poles ....
Re: SCIENCE GURUS LODGE by Mikebis(m): 11:02am On Oct 25, 2013
Mikebis: chai..na wa o,no 1 to do dis little clculatns
ok,here is d solutn
1.clculatin d rate constant usin
In a/a-x =kt
where In is stl d same as loge base x
a=10mol i.e initial conc
x=6mol i.e reactant mol
k=rate constant
t=10s i.e time
thr4..In 10/10-6 =10k
In2.5=10k
2.9=10k
k=0.29
2.calculatin d half life
T1/2 = 0.0693/0.29 =0.5290s
3.calculatin d rate of rxt
usn
R=kc
whr c=a-x
R=k(a-x)
=0.29-4
R=1.16mol/dm^3/s.
Dat all
Re: SCIENCE GURUS LODGE by IamSylva(m): 11:06am On Oct 25, 2013
Nomski0: The gravitational constant varies from place to place on the earth's crust. Give a reason why.
it is because the earth is not a perfect sphere.. Its sides are flattened
Re: SCIENCE GURUS LODGE by drstan(m): 11:06am On Oct 25, 2013
What are the bypass in gluconeogenesis and the enzymes responsible?
Re: SCIENCE GURUS LODGE by Nobody: 11:16am On Oct 25, 2013
State Doppler EffecT?
Re: SCIENCE GURUS LODGE by Nomski0(f): 11:16am On Oct 25, 2013
Shape of the earth is correct. Y'all were right.
Gluconeogenesis is a process which involves many enzymes, so which of them are you referring to. And what is bypass
Re: SCIENCE GURUS LODGE by Nomski0(f): 11:19am On Oct 25, 2013
FrancisTony: State Doppler EffecT?
The velocity of a sound decreases with increasing distance. The frequency/intensity of a sound reduces as the hearer moves further away from the sound or as the source of the sound moves away from the hearer.
Re: SCIENCE GURUS LODGE by Nobody: 11:29am On Oct 25, 2013
I_am_Sylva: chemistry?
Here u go


An unknown compound
contains only carbon,
hydrogen, and oxygen.
Combustion of 7.50 g of this compound
produced 11.0g of carbondioxide and 4.50 g of water. How much C and H were in the original sample?


Good morning gurussmiley
molar mass of CO2=44, molar mass of H2O=18
taking C as carbon
11g of CO2 was produced ..
So 12/44=C/11
C = 3grams or 0.25mol
.
.
4.5g of H2O was produced...
So 2/18=H/4.5
H = 0.5 grams or 0.5mol
.
.
Oxygen
7.5 - (3 + 0.5) =3.5g of oxygen or 0.22mol
solving furda, ..the empirical formula of the compound that waz combusted is:
CH2O
Re: SCIENCE GURUS LODGE by Mikebis(m): 11:34am On Oct 25, 2013
I_am_Sylva: chemistry?
Here u go


An unknown compound
contains only carbon,
hydrogen, and oxygen.
Combustion of 7.50 g of this compound
produced 11.0g of carbondioxide and 4.50 g of water. How much C and H were in the original sample?


Good morning gurussmiley
let me gv it a try,buh no abuse me if am wrng o.
Let d unknw cmpnd b x
usn equilibrium constant
ur product/reactant
kc=[11.0][4.50]/[7.50]
xo we av 6.6
there4 usn 6.6 to divd d molar mass of C nd H.
We av 6.6/12=0.55 for C
6.6/2 =3.3 for H

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