mayorall: The oily substanc dat lubricates mammalian hair z
a. Sebaceous gland
b.fatty cells
c.granular cells
d.sweat glands

sebaceous gland

mayorall: 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

2H₂ + O₂ ------> 2H₂O
2moles of hydrogen form --------------2moles of water
8g of hydrogen also forms---------8 grams of water

b. 8.0g

Atesunate15:
d

The ansa is c protein...boss u dey para o...drop questions 2...

Atesunate15:

i fink it should be canivourous

Holozoic.....heterotroph

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

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

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

1: B
2: A
3: A
4: am not sure abo ut dis but I tink A

Atesunate add me on 2go let's knock heads togeda : obinnau.

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....

The worn out erythrocytes is destroy by
a.Heart
b.Liver
c.Cell
d.kidney

WHY DONT YOU ALL TRY IT HERE FOR FREE http://passjamb.com.ng web and mobile

Thromboplastin is associated with
a.Blood formation
b.Pigments formation
c.Blood clotting
d.Blood circulation

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

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.......

mayorall: The worn out erythrocytes is destroy by
a.Heart
b.Liver
c.Cell
d.kidney

liver

mayorall: Thromboplastin is associated with
a.Blood formation
b.Pigments formation
c.Blood clotting
d.Blood circulation

blood clotting.

mayorall: 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

chemistry has been my bane all along.

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.......

i think its A

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.......

ANSWER:B

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.......

ANSWER:B .......it favours the forward reaction

mayorall: 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

answer:26.7 g/mol

Obinnau: i think its A

not A sir.

t.boy007:
answer:1/0.8/22.4
i'm sorry,i've no calculator with me here!

U gat wok it 2 get da final ansa....

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.

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.........

Please always explain your answers so that others can benefit from what you know...........Tanx

Drop questions please....coming to solve the calculation....

mayorall: 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

volume of X=800cm^3
1000cm^cm3=1dm^3,then 800cm^3 will=800/1000=0.8dm^3.
Mass of 0.8dm^3 of X=1.0g
.'.mass of 22.4dm^3 will be 22.4*1/0.8=28g/mol..

Wich of the halogens does nt have variable oxidation state?

Name of the most poisonous gas on heart is wot?

mayorall:

You can get through that..so let me know where the problem is if I could be of help.........

calculations in chemistry!

The volum occupied by the gas molecules z negligible compared to the volume of the container-what z the implication?