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Mayorall's Posts

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Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 5:02pm On Feb 28, 2013
Drop questions please....coming to solve the calculation....
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 5:00pm On Feb 28, 2013
Please always explain your answers so that others can benefit from what you know...........Tanx
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 4:57pm On Feb 28, 2013
Obinnau: chemistry has been my bane all along.
You can get through that..so let me know where the problem is if I could be of help.........
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 4:54pm On Feb 28, 2013
mayorall: Which of the following reactions will be affected by change in pressure of d equilibrium......
A.x + y <===> w + z
B.x + 2y <===> w + z
C. 2x <===> w + z
D. 2y <===> w + z
all at equilibrium and gases.......
Reaction A C & D has 2 moles each at the forward and backward reaction so there wont be changes in the equilibrium.
Reaction B has 3 moles at the backward reaction and 2 moles at the forward reaction so the equilibrium will shift to the forward reaction if pressure is increased.
Therefore, pressure has effect on reaction B.
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 4:48pm On Feb 28, 2013
[quote author=t.boy007]answer:1/0.8/22.4
i'm sorry,i've no calculator with me here![/quote]U gat wok it 2 get da final ansa....
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 4:47pm On Feb 28, 2013
Obinnau: i think its A
not A sir.
Education › Re: Osun State University (uniosun) 2013/2014 Post utme/Admission Thread by mayorall(op): 4:05pm On Feb 28, 2013
[quote author=mayorall][/quote].
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 4:02pm On Feb 28, 2013
Which of the following reactions will be affected by change in pressure of d equilibrium......
A.x + y <===> w + z
B.x + 2y <===> w + z
C. 2x <===> w + z
D. 2y <===> w + z
all at equilibrium and gases.......
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 3:55pm On Feb 28, 2013
The mass of 800cm^3 of a gas X at s.t.p is 1.0g...what is the molar mass of x....volume at s.t.p 22.4dm^3
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 3:52pm On Feb 28, 2013
Thromboplastin is associated with
a.Blood formation
b.Pigments formation
c.Blood clotting
d.Blood circulation
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 3:50pm On Feb 28, 2013
The worn out erythrocytes is destroy by
a.Heart
b.Liver
c.Cell
d.kidney
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 3:32pm On Feb 28, 2013
larri: The nitrogenous substance that is excreted by birds in order to conserve water is (A).ammonia (B).urea (C).uric acid (D)nitric acid

in mammals the exchange of nutrients and metabolic products occurs in the A.lymph B.lungs C.heart D.liver

A band of connective tissue linking two bones in a joint is known as A.tendon B.cartilage C.synovial membrane D.ligament

the companion cells are part of the A.pericycle B.phelom C.pith D.xylem
Urea, Liver, tendon....
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op):
Atesunate15: 2H2 + O2 ------> 2H2O
2moles of hydrogen form --------------2moles of water
8g of hydrogen also forms---------8 grams of water

b. 8.0g
hmmm lets try it da other way round and get the ansa
2H2 + 02 .......> 2H20

using the above formulars...
Moles = mass/molar mass moles =8/2+2 (frm d reactns)

moles =2

using sam formular to find the mass of water
moles =mass/molar mass. We v gotn our mole as 2
:-
mass of water = moles * molar mass

mass=2 * (2H20)
mass =2 * (2(2+16))
mass =2 * 38=76

The mass of water is 76.0g
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 2:52pm On Feb 28, 2013
Atesunate15: i fink it should be canivourous
Holozoic.....heterotroph
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 2:50pm On Feb 28, 2013
Atesunate15: d
The ansa is c protein...boss u dey para o...drop questions 2...
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 2:18pm On Feb 28, 2013
1.what mass of water is produced when 8.0g of hydrogen reacts with excess oxygen?
A.36.0g
b.8.0g
c.72.0g
d16.og
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 1:42pm On Feb 28, 2013
The oily substanc dat lubricates mammalian hair z
a. Sebaceous gland
b.fatty cells
c.granular cells
d.sweat glands
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 1:39pm On Feb 28, 2013
The circulation of blood 2 al pats of d body except d lungs is tru
a.lymphatic system
b.pulmonary circulatn
c. Systemic circulation
d. Pulmonary artery
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 1:37pm On Feb 28, 2013
The mode of nutrtn of sundew and bladderwort cn b dscrbd as
a.saprophytic
b.holozoic
c.autotrophic
d.chemosynthetic
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 1:34pm On Feb 28, 2013
Which of dz z lackin in diet of persn avin kwashiokor
a.minerals
b.vitamins
c.proteins
d. carbohydrates
Education › Re: Osun State University (uniosun) 2013/2014 Post utme/Admission Thread by mayorall(op): 1:21pm On Feb 28, 2013
mayorall: Accounting, Economics, Political science and international relations, Geography, Sociology etc...
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 1:07pm On Feb 28, 2013
Which of d folowin z a polysaccharide
a. glucose
b. fructose,
c.cellulose
d.maltose

2 wch of d 4loin posses mammary gland
a. Dogfish
b. Whale
c. Shark
d. Catfish

3.The function of ribosomes in cells is
a. Starch synthesis
b. Lipid storage
c. Transport materials
d. Protein synthesis

4.The functn of tricocytst in paramecium is
a movement
b defence
c excretion
d reproduction.
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 12:55pm On Feb 28, 2013
Bring in the calculation questions so we can apply the formulars,.......
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 12:53pm On Feb 28, 2013
mayorall: Sum had bin findn it dfcult in solvn calculatns on chemistry...buh ds litu formulars will help you on solving the calculations

a.moles= mass gven/molar mass

b. Moles= number of particles/6.02*10^23

c .moles = concentration in mol/dm^3 * Volume in dm^3

d. Moles = volume\22.4dm3

e. Moles =pv/rt
Note: number of particles can be numba of atom,ion,molecule

p is pressure
v volume
r constant
t temperature
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 12:47pm On Feb 28, 2013
Sum had bin findn it dfcult in solvn calculatns on chemistry...buh ds litu formulars will help you on solving the calculations

a.moles= mass gven/molar mass

b. Moles= number of particles/6.02*10^23

c .moles = concentration in mol/dm^3 * Volume in dm^3

d. Moles = volume\22.4dm3

e. Moles =pv/rt
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 12:28pm On Feb 28, 2013
larri: because d atomic number (proton number) of an element does nt change with chemical reaction....the atomic number determines d chemical properties of an element....
Hmmmmm nice one...........proton does not take part in chemical combination...itz electron that does.....
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 10:56am On Feb 28, 2013
Why is it that the chemical properties of an element does not change after chemical combination.....
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 10:53am On Feb 28, 2013
Always support your answers with little explanations.....keep da game goin by also bringing in questions....
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 10:00am On Feb 28, 2013
mayorall: The first cell of an individual is
a. Blastomere
b. Sperm
c. Zygote
d. Egg
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 9:52am On Feb 28, 2013
The first cell of an individual is
a. Blastomere
b. Sperm
c. Zygote
d. Egg
Education › Re: Biology, Chemistry and Physics tutorial thread for jamb by mayorall(op): 9:50am On Feb 28, 2013
The commercial production of Tetraoxosulphate (vi) acid is know as
a. vulcanization
b. contact process
c. Herber process
d. Isomerization
Education › Re: 2013/2014 Utme And Admission Process by mayorall(m): 9:42am On Feb 28, 2013
For jamb 2013 tutoria for chemistry and biology...lets meet on this thread

www.nairaland.com/1210309/jamb-thread-biology-chemistry#14529558

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