₦airaland Forum

Given that the mean relative atomic mass of chlorine contains two isotope of mass num 35 and 37,what is the percentage composition of the isotope of mass num 37?

1)What did u knw as isotopes??

2)There are two isotopes of chlorine with mass num 35 and 37 respectively. If the isotopes exist in the ratio Of 3:1,the lighter the isotope being abundance.what is the relative atomic mass of chlorine?

Have this peepz
19.04g of ammonia were mixed with 31.10g of hcl gas in a closed container.
A)which of the reactant were in excess and by how much??
B)how much ammonium chloride is formed?
C)how much more of the insuffiecient reactant,would be needed to completely react with excess of other reactant.
N=14, H=1, Cl=35.5

tuwayz:
(-2x/x+3) + [(5x+10)/(x^2+4x+3)]

Still wrong.

thankyouJesus:
since you insist the question is correct, therefore, the solution is
2 - [(1)/(4x+1)] - [19/(4x+12)]

Still wrong.

Dopeyomi:
[size=20] Here is the Correction
1B
2C
3A
4C
5D
6B
7B
8A
9D
10D [/size]



Cc; Fembleez1 ,halpher and others.

Hmm. I knew is btw the A and B
But. Pls explain why??

Dopeyomi:
Nice wσяk



8/10

Lemme see ma correction sire

Which of the following compound give a hissing sound,when undergoing certain process?
1.P2O5
2.P2O3
3.CaO
4.Sio2

As we go down the group the atomic radius................... and the ionization energy ..............?
Give a reason for your anwser with just two statement.

Aragonal,calcite and coral are the ore of which element..?
1.Na
2.Al
3.Ca
4.none

mathefaro:
I'm not sure you guys are prepping for UTME with the kind of questions you're throwing in especially the mathematics. If you feel like flexing muscles with strong questions, you can move over to the nairaland maths clinic. Most of these questions you guys are posting are beyond the scope of UTME.

owk sire.

thankyouJesus:
1. $3dx/(4x-1)^3
3$dx/(4x-1)^3
let u=4x-1
du/dx = 4
3/4$du/u^3
(3/16)(4x-1)4 + c
2. X^2 + y^2 = 4
2x + 2y[dy/dx] = 0
finish up

ur 1st answer is wrong.
owkk

thankyouJesus:
Check the question again especially the value emboldened

The question is correct sire!

1)In how many ways number greater than 100 can
be made using 1,2,3,4,5? No repetition.

2) A committe of four is to be chosen from 5 editors and 3 reporters.in how many ways can this be done so that commitee includes
A)at least an editor.
B)at least one reporter.

Factorise
2X^2 +3X + 10 / (x+1) (x+3)

INTEGRATE
:- 3dx/(4x-1) ^3
Diffretiate
X^2 + Y ^2 = 4

1001101
Find the Ones and twos complement of the Subtrahend above.

Dopeyomi:
Here are the Questions.



Question (1)
Aren't уσυ tired of this_________rain
(a)Continuing
(b)Continual
(c)Continuous
(D)Continue

Question (2)
The injury sustained by Okocha has caused him________pain
(a)continual
(b)continuing
(c)continuous
(d)continue

Question (3)
The visitor was vey uncomfortable because of his_______nose
(a)runny
(b)running
(c)watery
(d)flowing

Question (4)
The thief was caught_______down the street
(a)runny
(b)run
(c)running
(d)ran

Question (5)
He claimed that Mr. Okoli's ulterance was tantamount to defarmator of character so he suit for________
(a)Damage
(b)Some damages
(c)A damage
(d)Damages

Question (6)
The violent storm that occurred on Easter Monday destroyed many houses and caused___________in lagos
(a)heavy damages
(b)much damage
(c)several damages
(d)many damages

Question (7)
Ѕнє had been here_________the past three hours
(a)since
(b)for
(c)from
(d)in

Question (
I have known her as a light-fingered fellow__________my child hood
(a)since
(b)for
(c)from
(d)in

Question (9)
The accident which occurred at Iwo-road was_________as it claimed many lives
(a)serious
(b)bad
(c)ghastly
(d)fatal

Question (10)
The riot that occurred in Chibok was_________as little injury was sustained
(a)serious
(b)fatal
(c)bad
(d)ghastly.

1.C (rain without a short break)
2.A (pain with a short break)
3.A
4.D
5.D
6.B
7.B (lenght of time)
8.A (begining of a deeds)
9.D
10.D

The intramolecular force responsible for the liquifaction and solidification of mostly non-metal and Monoatomic element/noble element. Is.......?

The unstable produce of destructive distillation of coal is??

The pure
The impure and
The Mineral state in which carbon is found are......??

Kealmin:
i cant really remember it well but i believe dynamo i.e d conversion of mech to elect dats is fleming left hand but d conversion of elect to mech has to do with fleming ryt hand

Actually fleming right hand rule shows or give the induce current in both dynamo and electric motor
(as we knw that the flemings left shows the direction of convectional current).
while the fleming left gives or show the force or motion of the conductor.

In Ruhmkorff spark coil the insulated soft-iron wire used function to.....?

alakara:
For chemistry waec use new school chemistry by Ababio. Will get back to you 4 jamb.

U r mistaken bro,it's better one combine Newschool and that Lamlard.
And for the physics text essential too is good,it all depend on how one can Harness the available resource in hand.

Kealmin:
is between o and 90 degree wen d angle of dip is at d north pole it is 0degree but at d equator is 90degree

Hmm.
It is propably 90 degree for the pole and
0 degree for the equator
This type question came out in dis year ppt jamb type.
Xo the ansa is 90 degree.

A compound which can undergo disproportionation must either be......or.....?

At the pole angle of dip is always..?
A)0 degree
B)90 degree
C)180 degree
D)45 degree

The difference btw fleming's right and left hand rule is that..?

A lift in a downward movement there is a jar containing water which is pouring in a downward direction,what happen to the pressure of the water as the lift near it latent stage..?
A)increase and decrease
B)decrease and increase
C)increase
D)decrease

Kealmin:
C is correct because it exhibit two types of motion

Yea it is Relative motion simply because either the bar magnet or the solenoid is at rest with respect to other. It exhibit only a type of motion which is Relative.

The scientist that noted or stated that current is in a direction perpendicular and that is parallel to the magnetic field are...........nd............?

In an electromagnetic induction,the magnetic pole and the solenoid exihibit what type of motion
A)translational motion
B)rotational motion
C)relative motion
D)random motion.