Adebayour26's Posts

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Celebrities › Re: I Have The Biggest Bum In Nollywood- Didi Ekanem (Pictured) by adebayour26: 7:35am On Dec 21, 2014

MissMeiya:
[size=13pt]Four young Nairalanders won up to 100 thousand naira in cash and airtime last night for writing an essay about how to fix Nigeria. But the mods couldn't help us promote the contest, because they prefer to put things like this on the frontpage. Mr and Miss Nairaland, Nairaland Couple, biggest butts, and what a Nollywood celebrity had for breakfast this morning.

Una well done.[/size]

True talk

1 Like

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 7:35pm On Dec 19, 2014

cao:
I know what it means, but in this case they're my initials.

Interesting....

mathefaro, Thanks for that explaination.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 2:57pm On Dec 19, 2014

Preboy:
sorry guys for my absent.... I've been quite busy, bt now am back

Welcome back.

Agriculture › Re: What's Best To Do With 1 Million Naira In Agriculture? by adebayour26: 2:37pm On Dec 19, 2014

pi4u:
Wow! I learnt so much from this. Sure to follow....[quote author=Denn post=29016695]First, invest the money in a good savings account in a bank, possibly fixed deposit for a month

Then get online... Read.... You need to spend hundreds of hours reading about what people have done in the past... Of note is this agric section of NL. Read iita articles etc.

Then get closer to existing farmers.... They are plenty on NL. There are a lot here offering free and immense education on how it is being done

Then go to organizations like Songhai.... Dig in with your fingers...

Then come back to your fixed deposit and apply.... By then you will know what to do.

Any other approach, and that million is gone... Then you still need to do what I listed...

Family › Re: Ladies Vs Mother-inlaws by adebayour26: 2:34pm On Dec 19, 2014

[size=22pt] Let her know that her daughter-in-law will pray the same prayer for her. [/size]
In fact, they might eventually KILL her

4 Likes

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 10:06am On Dec 19, 2014

cao:
I see, it's that time of the year when I regret making my username as cao...

lol
Calcium Oxide- CaO
Funny username.

Romance › Re: My Heartbreaker Ex Needs My Help. by adebayour26: 7:48am On Dec 19, 2014

O ga o, people should think of the consequence of their action before they do it.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 7:39am On Dec 19, 2014

Thank you mathefaro. We hope others' contributionsare still expected.

1 Like

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 11:17pm On Dec 18, 2014

Kunlexic:
1.Neutraliztan is the rxn btween an acid and alkali to give salt and water while exterificatn is rxn between alkanoic acid and alkanols to form esters.
Neutralisatn is not reversible while esterrficatn is reversible
2.As the collision between particles,they acquire greater KE which is proportional to the temperature.as the temperature increases,the rate of rxn also increases.
Catalyst have no effect on the product formed,it just slows down or accelerate the rate of reactn
Increase in temperature increases the rate of reaction
3.It is not used because it reacts with ammonia to form (NH4)2SO4.the drying agent is fused CaO.
4.Atoms combine to attain the stable configuration like those of the noble gases/to achieve octet or duplet configuratn of the outermost shell like the noble gases
5.Boiling takes place at a definite temperature while evaporation taked place at all temperature.

GBAAM, this is brilliant.

Nice one.

Be expecting more.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 10:04pm On Dec 18, 2014*

Example:
An element X has two isotopes of ²⁰₁₀ X and ²²₁₀ X in the ratio of 1:3. What is the relative atomic mass of X?
Solution:
Add ratio (1:3) of occurrence together, 1+3=4
100%/4===25%

Element ²⁰₁₀ X occurred 25x1=25% in nature

²²₁₀ X occurred 25x3==75%

(20x25)/100 + (22x75)/100

===> 5 + 16.5 == 21.5

Relativ atomic mass of X is 21.5

ELECTRONIC CONFIGURATION
According to Aufbau Principle that in the building up of atoms, electron enter into orbitals in order of increasing energy. This means that electrons are fed into orbitals starting at the lowest energy level before filling higher energy levels. The Aufbau principle can be easily be derived using this:

1S 2S 2P 3S 3P 4S 3d 4P 5S 4d 5P 6S 4F 5d 6P 7S 5F 6d 7P

Note that there are four orbitals: S, P, d, F. The S-orbital is capable of occupying a maximum of 2 electrons, while the P-orbitals can take a maximum of 6 electrons, the d-orbital wil take 10 electrons while the F-orbital can occupy a maximum of 14 electrons.

In writing the electronic configuration of an element, get the atomic number, then use the format above to write the configurations following the rules strictly.
E.g: The electronic configuration of ₁₃Al.
1S² 2S ² 2P ⁶ 3S ² 3P¹
If you count the power, you will notice it's 2, 2, 6 and 3, their sum is 13 i.e it is summed up to the atomic number.

1 Like

Jokes Etc › Re: Do U Remember Funny Secondary Secondary School Nicknames? by adebayour26: 9:12pm On Dec 18, 2014

fabulousmann:
Am a lady and I was called "man" I can assure u dat dat name is not abt to die anytime soon. Oh n dat was 2004

Look at ur username yourself, fabulous mann

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 8:38pm On Dec 18, 2014

halpher, kunlexic, preboy, bolaji3071, victar, bhuumhite, shaquillle, Dsd1pumking, fedcom, mathefaro, sorbentcrooner, come over here and check things out.

Am waiting to see who gets here first oooo.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 8:31pm On Dec 18, 2014

Exercises:
Attempt the following questions
1. Differentiate between Neutralization and Esterification reaction.

2. How does the collision theory explain the rate of chemical reaction?
How does catalyst & Temperature affect the rate of chemical reaction?

3. Why is H₂SO ₄₎ not commonly used as drying agent in the preparation of Ammonia. Suggest a drying agent being used.

4. Why do atoms combine? (Chemical bonding)

5. Differentiate between Boiling and Evaporation.

Education › Re: Official Submission Thread (babyosisi Christmas Essay Contest) by adebayour26: 4:20pm On Dec 18, 2014

Martins301:
http://www.arts.usask.ca/economics/skjournal/sej-3rd/hajler3.htm
Cc: Babyosisi CFCfan MissMeiya

Martins301:
Preamble
http://www.teachers.ab.ca/About%20the%20ATA/Governance/PolicyandPositionPapers/Position%20Papers/Pages/Nature%20of%20Teaching%20and%20Teaching%20as%20a%20Profession.aspx
Cc: Babyosisi CFCfan MissMeiya

Chai!!!
asiri ti tu oooo. This is funny.
But they might have acknowledge the writers, am sure the Judges will handle that well.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 3:26pm On Dec 18, 2014

More to come soonest....

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 3:25pm On Dec 18, 2014

DISCOVERY OF PROTON

Since the atom as a whole is electrically neutral, there must exist inside the atom enough positively charged components to balance the negatively charge of the electrons. Positive ions with the lightest mass were produced when the gas in the tube was Hydrogen. These positive ions (or hydrogen ions) were protons. Each proton carries a unit of positive charge. Thomson determined tge charge/mass ratio of the proton to be 9.58x10⁷Ckg^-1 which is 1840 times smaller than that of the electron. If we assume the charge on the proton to be +1, and that on the electron as -1, then the proton is 1840 times heavier than the electron.

In 1898, J.J Thomson proposed that the atom is a sphere of positively charged in which negtively charged electrons are embedded.

ATOMIC NUMBER
In 1885, Roentgen discovered that when high energy electrons in a discharge tube collide with the anode, a penetrating radiation, which he called X-rays, is produced.
In 1914, Moseley found that he could assign a number, called the atomic number to an element emits, when it is used as the anode of an X-ray tube.
N.B: The atomic number represented the number of protons in the nucleus

Discovery of Neutron
In 1932, Chadwick discovered the Neutron. The Neutron had a mass equal to that of a proton but carried no charge. The discovery of the neutron indicated that the atomic nucleus was made up of protons and neutrons.

The mass number of an atom of an element is the sum of the protons and neutrons in it.

ISOTOPY
It is phenomenon whereby atoms of a element exhibit different mass numbers but have the same atomic number. This is due to differences in the number of neutrons present in these atoms. Such atoms are known as ISOTOPES. Hence, isotopes are atoms of the same elements with the same atomic numbers but different mass number. Isotopes of an element have slightly different physical properties but exhibit the same chemical properties. This is because Neutrons contribute only to the mass of the atom, not its chemical behaviour.
E.g ³⁵₁₇ Cl and ³⁷₁₇ Cl.

Atomic number is 17, while
Mass numbers are 35 & 37 respectively.

Family › Re: My Voracious Boyfriend by adebayour26: 9:10am On Dec 18, 2014

Tell it to him in love. Make him read books & see reasons why he should watch his diet.

1 Like

Jokes Etc › Re: Do U Remember Funny Secondary Secondary School Nicknames? by adebayour26: 8:07pm On Dec 17, 2014

Nelrulez:
Valentine, I was given this just because I gave a classmate a valentine gift and was embarrassed publicly by the girl. Funniest part was that she didn't return my gift. 20naira 4show. I was nicknamed this just because I had a #20 bet with a friend that I could walk down to the girls dormitory naked which I did. I was nicknamed reptile by the girls, it was just of recent I got to know the reason. I went for a mate's wedding and ran into a secondary school mate who called me reptile. I was forced to ask why I was given that name and she responded. Don't you know you have a long neck? I nearly dropped dead. #Secondaryschoolshit

Mehn, I can't stop laffin.

Jokes Etc › Re: Do U Remember Funny Secondary Secondary School Nicknames? by adebayour26: 8:01pm On Dec 17, 2014

[size=18pt]There was a guy we normally call DESERT WARRIOR & Emperor Vulga[/size]
because of the nature of his air.

There's another one called ORI EYIN (Egg Head)

Another one, anjonu iberu (fearful monster).
I was being called 'FALETI', culled from my first name Adebayo.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 6:13pm On Dec 17, 2014

Bhuumhite:
can u drop ur number?.. cos i can't drop my number here,i'll send a msg and u'll add me

send ur number into my mail: adebayour26@gmail.com

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 12:59pm On Dec 17, 2014

A Typical structure of a Carbon atom.

As we continue, we will learn that for an atom, the number of electron is the same as the number of Proton and also the same as the Atomic number.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 12:53pm On Dec 17, 2014

Be expecting more updates later in the day.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 12:50pm On Dec 17, 2014

ATOMIC STRUCTURE

According to Dalton's atomic theory, atoms were indestructible solid particles. However, experiments involving electrolysis indicate that certain compounds contain charged particles called IONS. The formation of ions could not be explained by Dalton's atomic theory. As a result of this and other observtions, scientists had to modify their views.

The atom is made up of three main particles— electrons, protons and neutrons with the charge: negative, positive and neutral respectively.
Rutherford's atom (a scientist) consist of a positively charged core called the nucleus, where most of the masa of the atom is contained and electrons, which move around the nucleus.

The nucleus contains the Proton and the neutron. The mass of the Proton and neutron can be said to be 1unit and 1unit respectively, while that of the electron is 1/1840 unit.

The electron was discovered by J.J Thomson in 1897 by Cathode Ray experiment. In the experiment, he also observed that :
1. Cathode rays travel in straight lines and cast shadows of opaque objects placed in their paths;
2. Cathode rays are composed of only negatively charged particles;
3. Cathode rays are capable of producing mechanical motion;
4. Cathode rays are identical in nature and in ratio of charge to mass, irrespective of the nature of the residual gas in the discharge tube or of the metals used in the electrodes.
Thomson argued that these particles were fundamental particles i.e they were present in all matter. He concluded that these particles must be the electrons proposed earlier by other scientist. Thomson measure d ratio charge/ mass which is found to be 1.76x10¹¹CKg^-1.

In 1910, R.A Milikan successfully measured the charge of the electron in his oil-drop experiment. This charge is -1.6x10^-19 C. Using the above values, the mass of an electron is found to be only 9.1x10 ^-31Kg. Th mass is so small that it hardly makes any difference to the mass of the atom.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 12:16pm On Dec 17, 2014

Good afternoon everyone.
How has it been with us and our academics? It's yet another time here today on this Chemistry thread and I hope the simple topic we are gonna take will be well understood.

Thanks as you follow us....

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 7:04am On Dec 17, 2014

Kunlexic:
down the group,ionisation energy decreasea and it increases across the period

CORRECT

Poems For Review › Re: The Lone Ranger. by adebayour26: 5:31am On Dec 17, 2014

It's a good write-up. I just hope you will concentrate your mind one day and make yourself happy even if it is just once.

Everyone has his/her own challenges, in fact, there are people that have more problems and challenges like you do but they are still coping with LIFE.

Life is more Beautiful than that. It's a good write-up. I just hope you will concentrate your mind one day and make yourself happy even if it is just once.

Everyone has his/her own challenges, in fact, there are people that have more problems and challenges like you do but they are still coping with LIFE.

Life is more Beautiful than that. It's a good write-up. I just hope you will concentrate your mind one day and make yourself happy even if it is just once.

Everyone has his/her own challenges, in fact, there are people that have more problems and challenges like you do but they are still coping with LIFE.

Life is more Beautiful than that.

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 5:21am On Dec 17, 2014

Kunlexic:
1.This is the energy required to remove the most loosely bounded electrons from one mole of an atom in the ground states.
M------>M^+ +e^-

2.Isotopes are atoms of the same elements that have the same atomic number but different mass numbers as a result of differences in number of neutrons in the nuclei of each atom.

3.E-ammonium chloride
F-NaOH solution
G-ammonia

PERFECT.

So What's d trend of ionisation energy down d group and across d period?

Education › Re: Nairaland Jamb Tutorial Centre {chemistry Thread} by adebayour26: 7:43pm On Dec 16, 2014

1. What is first Ionization energy?

How does it affect down d group and across the period?

2. Define Isotope.

3. A solid Chloride E which sublimed on heating reacted with an alkali F to give a choking gas G. G turned moist red litmus paper blue.
Identify E, F & G

Romance › Re: . by adebayour26: 4:00pm On Dec 15, 2014

STENON:
Hmmmmmm...........The most painful thing in Life is seeing the one you Love, Loving another Person.

Exactly, that's my point

Romance › Re: . by adebayour26: 1:39pm On Dec 15, 2014

STENON:
Someone I love.

What if u love the person and he's just pouring out the Love somewhere else?

Health › Re: NEW BORN BABIES! Are U A New Mum? Then Lets Discuss Babies Here!!!!! by adebayour26: 1:17am On Dec 15, 2014

@MojAyo, I sent you a Pm some days ago, I hope u saw it.

Education › Re: babyosisi Christmas Essay Contest by adebayour26: 7:47pm On Dec 14, 2014

israelboy1:
u will see wat u posted on anoda platorm

Thanks

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