ruqqayah:
As a DE candate, would i write Post Jamb for Admission to Unilorin

EmpireSolid:
My utme subject combinations are;
English
Maths
Physics
Agric
My score is 191

**My preferred course was "Computer science
Now I'm looking to change my course to a less competitive course..who's in d house to help point me in d right direction?

P.S, somebody asked me to change it to "Computer science education" buh i dont think my subject combo suits the course.

Chixco95:
Computer Science In Uni Ibadan.I Had 203 In My Jamb.What Are My Chances?

Dikachi483:

Pls someone should reply this

DrBESTJC:
CHEMISTRY.


1: If 4g of a radioactive material of half-life 10 days is spilled on a laboratory floor, how long would it take to disintegrate 3.5g of the material?
(A) One and 1/4 days.
(B) Eight and 3/4 days.
(C) 30 days.
(D) 80 days.

2: If 1.20 * 10^5 atoms of a radioactive nuclide decays such that only 1.50 * 10^4 remained after 81 days.The half-life of the radioactive nuclide is....
(A) 21 days
(B) 27 days
(C) 54 days
(D) 81 days


Abeg how do I solve questions like these without calculator

SamanN:



Answer to question number one is 30 days.

Analysing the question, the material has a half-life of 10 days. Going by definition of half-life, it's the time taken for half of a material to decay. (Did I get the definition right?).
Meaning, disintegration
*From 4.0g—2.0g it took 10 days.
*From 2.0g—1.0g took another 10 days.
*From 1.0g—0.5g took 10 days.
N.B- The mass decreases by half of its original mass.

It took 30 days for the material to disintegrate 3.5 of its 4.0g mass. Or, it took 30 days for the material to retain 0.5g of its 0.4g. I hope this could help??.

As for the second question, that will be later. Typing...

Eben331:
Thanks. Did Eksu, OOU and Uniosun accept 2nd choice last yr?

Dikachi483:

Pls someone should reply this

DrBESTJC:
CHEMISTRY.

Two radioactive elements P and Q initially have the same mass.If their half-lives are 10 and 5 years, the ratio of their masses(ie. P:Q) after 20 years is.....
(A) 4:1
(B) 2:1
(C) 1:2
(D) 1:4


This question is somehow ambiguous to me.Please,I need explanations to the right answer.

Ibunkun1:

For P After 20 Yrs D Mass Is 1/4(i.e,if 1/2-10yrs,x-20yrs.Cross Multiply And Solve)for Q after 20 Yrs D Mass Is 1/16(same Method Above).Their Ratio Will Now Be:1/4:1/16.Further Simplification Will Give You 4:1(A)

clarkmos15:
please anyone with COOU WhatsApp group should quote me

DrBESTJC:

Correct...thanks

EricIyke:
Any FUTO aspirant here?

Samsonyte:

no federal or state uni accept 2nd choice, wat u can do now is datz, u apply for institution that dont fetch data frm jamb, which means if u dont choose them in jamb, u can apply for their putme, so after putme, the skul will advice u to change their institution to 1st choice, ur score will determine whether u change it to first choice or not, the institution dat dont fetch data are: oou, tasued, eksu.

bossboy91:
Yea,check the FUTO thread.

Category1:
Fuoye aspirants can follow this group https:///BfxjktIZdvUEa4NJtXS9zE

Samsonyte:

boss, no institution accept 2nd choice now, it is first choice, but wat u can do is datz u can apply for eksu or oou form without choosing them in jamb becos they dont fetch data frm jamb, so u can apply for their putme/screening and apply as first choice during the registration, so after the putme/screening exam the skul will advice u to change their institution to first choice in jamb, so it now depends on u whether u want to change it or not.