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Science/Technology / Questions And Answers by awosanyaolaide(m): 4:19pm On Apr 24, 2023 |
Questions ii) With relevant equation, state Charles' Law. bi) Define Basicity of Acid ii) Using a relevant equation, state Neutralization Reaction 3ai) If 280cm3 of hydrogen diffuses in 40 seconds, how long will it take for 490cm3 of a gas, X, whose vapour density is 25, to diffuse under the same conditions? (Relative molecular mass of hydrogen = 2)
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Science/Technology / Jamb Cbt Information by awosanyaolaide(m): 9:52am On Apr 24, 2023 |
*UTME CBT HAS FOUR (4) BATCHES EACH DAY* ```The UTME will commence on April 25, 2023.``` 1st Batch, Will Commence By 7:00 am 2nd Batch, Will Commence By 9:00am 3rd Batch, Will Commence By 12:00pm 4th Batch, Will Commence By 3:00pm *JAMB Comprises Four(4) Subjects* (1). English = 60 questions in 40 minutes. (2). 2nd Subject = 40 questions in 27 minutes (3). 3rd Subject = 40 questions in 27 minutes (4). 4th Subject = 40 questions in 26 minutes A total of 180 questions and 2hours. 10 Questions will be from the JAMB recommended reading text. Use an average 40 seconds to answer each question. *JAMB 8 keyboard keys Features* A - For option A B - For option B C - For option C D - For option D R - For Reverse Question N - For Next Question P - For the Previous Question S - For Submit Take note of these 8 Keyboard Keys Features as you might not be provided with a mouse on the examination day. *PLS LET'S GIVE THIS INFO D WIDEST CIRCULATION AS SOME OF OUR CHILDREN OR WARDS MIGHT NEED THEM* May God’s favor and grace work with our Children in the hall to achieve success that will culminate into admission, Aameen. Thanks. Gbenga Adebambo
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Science/Technology / Chemistry Questions by awosanyaolaide(m): 3:09pm On Apr 22, 2023 |
Question 1. State Gay Lussac's Law of Combining Volume Answer 1: Gay Lussac's Law of Combining Volume states that when gases react, they do so in volumes which are simple ratio to one another and to the volumes of the products, if gaseous, provided that the temperature and the pressure remain constant. Question 2. At 17 degree Celsius, a sample of hydrogen gas occupies 125cm3. What will the volume be at 100 degree Celsius, if the pressure remains constant? Answer 2. See 1st attached image Question 3. A certain amount of gas occupies 5.0dm3 at 2atm and 10 degree Celsius. Calculate the number of moles present. (R= 0.082atmdm3/kmol) Answer 3 : See 2nd image below. Question 4. State Collision Theory and mention four factors that affect rate of reaction Answer 4 : Collision Theory assumes that there must be collisions between reactant particles for a chemical reaction to occur. Factors that affect rate of reaction include: - Nature of Reactants - Concentration/pressure (for gases) of reactants - Surface area of reactants - Presence of Light - Presence of Catalyst
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Science/Technology / Salt by awosanyaolaide(m): 11:22am On Feb 28, 2023 |
Our daily Chemistry Tutorial continues on mixlr now. We will be live today on mixlr. Time: 11.30am-12noon awosanyaolaide is on Mixlr https://mixlr.com/awosanyaolaide Topic: Salt |
Science/Technology / Re: Esterification by awosanyaolaide(m): 1:47am On Feb 22, 2023 |
Please kindly make clear your question sir @siberia01 |
Science/Technology / Esterification by awosanyaolaide(m): 5:02pm On Jul 28, 2022 |
QUESTION Define Esterification with a relevant example. ANSWER Esterification is the process of reversible reaction between alkanol and alkanoic acid in the presence of concentrated Hydrogen tetraoxosulphate (VI) to produce alkylalkanoate (ester) and water. E.g. Reaction between ethanol and ethanoic acid forming ethylethanoate(ester) and water. See attached image.
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Science/Technology / Solubility, Isotopes, Ions by awosanyaolaide(m): 4:43pm On Jul 28, 2022 |
QUESTION: Define each of the following terms: i. Solubility ii. Saturated solutions iii. Ions iv. Isotopes ANSWER: i. Solubility The Solubility of a solute in a solvent at a particular temperature is the maximum amount of the solute in grams or moles that will saturate 1dm3 of the solvent at that temperature. ii. Saturated Solution Saturated solution of a solute at a partivular temperature is one which contains as much solute as it can dissolve at that temperature in the presence of undissolved solute particles. iii. Ion This is any atom or group of atoms which possess an electric charge. The types of ion include: Cation Positively charged element e.g Na+, K+, Anion Negatively charged elements e.g Cl-, Br- iv. Isotopes These are atoms of an element that possess the same Atomic Number (Proton Number) but different Mass Number (Atomic Mass). Note that difference in Mass Number is due to differences in Neutron number. Elements which undergo isotopy are: Hydrogen, Oxygen, Carbon, Chlorine. Note: Kindly reach out on any questions By: Awosanya Olaide |
Science/Technology / Re: Short Note In Chemistry by awosanyaolaide(m): 1:42pm On Jul 26, 2022 |
Request Noted |
Science/Technology / Oxidation Number And IUPAC by awosanyaolaide(m): 1:40pm On Jul 26, 2022 |
Question 1: Determine the oxidation number of sulphur in Na2S2O3? Answer 1: See solution on the attached image. Question 2 Write the IUPAC of the following compounds: 1. NaClO3 2. CuSO4.5H20 Answer 2 1. Sodiumtrioxochlorate (V) 2. Copper (II) tetraoxosulphate (VI) pentahydrate #chemistry 1 Like
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Science/Technology / Re: Short Note In Chemistry by awosanyaolaide(m): 5:38pm On May 06, 2022 |
Esterification (Ester-forming process) This involves the reaction between Alkanoic acid and Alkanol to form Alkanoate (Ester) and Water only. E.g Ethanoic Acid + Methanol => Methylethanoate (Ester) + Water CH3COOH + CH3OH => CH3COOCH3 + H20 Neutralization Reaction This is the reaction between Acid and Base (alkali) to form Salt and Water only. Acid + Base => Salt + Water HCl + NaOH => NaCl + H2O Hydrochloric acid + Sodium hydroxide => Sodiumchloride (Salt) + Water only. Note : The type (strong or weak) of acid and base will determine the salt formed. More to come.. Olaide Awosanya |
Science/Technology / Short Note In Chemistry by awosanyaolaide(m): 5:34pm On May 06, 2022 |
Do you remember? Redox reaction entails both Reduction and Oxidation reactions. Elements undergoing Reduction are called Oxidizing Agents while those undergoing Oxidation are Reducing agents. In balancing redox reaction, you must balance both atomically and ionically. Atomically means number of atoms on the reactant side must equate those on product side. Ionically means the number of electrons on the charged species must be equal on both sides. Hydrocarbon Hydrocarbons are compounds of Hydrogen and Carbon. Saturated hydrocarbon is explained through Alkane (general formula CnH2n+2) when n=1, the compound is methane (CH4). The bond between two carbon atoms in alkane is single bond (C-C). Read up on Alkane to under saturated hydrocarbon. Unsaturated Hydrocarbon is explained through Alkene (general formula CnH2n) and Alkyne (general formula CnH2n-2). Compared with alkanes, alkenes and alkyne lost 2 and 4 hydrogen atoms respectively. Alkenes then have atleast one double (C=C) while alkynes have atleast one triple bond. In addition to Combustion reaction, Saturated Hydrocarbon undergoes substitution reaction while Unsaturated Hydrocarbon undergoes addition reaction (to complement the lost hydrogen atoms). More to come. Olaide Awosanya 1 Like |
Science/Technology / Calculations In Chemistry by awosanyaolaide(m): 3:12pm On Feb 08, 2022 |
Join our chemistry with a new series.
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Science/Technology / Acids And Base by awosanyaolaide(m): 9:54am On Feb 01, 2022 |
We are treating Acids and Base here. This will help prepare for WAEC/NECO and Jamb. Enjoy study. @Olabest, we sell *chemicals, reagents and equipment* 2 University/Researchers, Seconday School and Hospital Laboratories. Why not discuss with us first from anywhere in Nigeria. 07032983512, 07018394843
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Science/Technology / Re: Redox Reaction by awosanyaolaide(m): 3:33pm On Jan 31, 2022 |
Redox Reaction covers: Reduction reaction Oxidation reaction Reducing agents Oxidizing agents Balancing Redox reaction etc. |
Science/Technology / Redox Reaction by awosanyaolaide(m): 3:32pm On Jan 31, 2022 |
This is a teaching on Redox Reaction prepared by me in #Chemistry. Study and ask question. Do you have another preparing for WAEC/NECO or Jamb, reach us to join the whatsapp group for free coaching. We sell reagents and chemicals to schools, university researchers/students and laboratory too if you need. Reach out now. Thank you
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Science/Technology / Teaching On Collision Theory & Oxidation Number by awosanyaolaide(m): 10:33am On Jan 26, 2022 |
The teaching was prepared by me, Olaide Awosanya focusing: Oxidation Number and calculation Collision Theory in #chemistry. Do you care to join our whatsapp group, sign up with us. @Olabest, we sell chemicals, reagents and equipment 2 University/research lab, seconday school and hospital laboratories. Why not discuss with us first. 07032983512 1 Share
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Science/Technology / Haber And Contact Processes by awosanyaolaide(m): 1:43pm On Jan 25, 2022 |
Today we will be discussing Contact and Haber Processes. What are they? See them here. Also, @Olabest, we sell chemicals, reagents and equipment 2 University/research, seconday school and hospital laboratories. Why not discuss with us first. 07032983512 Keep learning with us 1 Share
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Science/Technology / Solved Question Series In NECO 2021 by awosanyaolaide(m): 6:24pm On Jan 22, 2022 |
Here are personally treated questions from NECO 2021 Chemistry Questions. We have created our whatsapp groups, reach out to us for the links 1 Share
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Science/Technology / Base by awosanyaolaide(m): 9:23am On Jan 18, 2022 |
Do you know what difference lies between Base and Alkali? See it here. #chemistry 1 Share
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Science/Technology / Join Us Now by awosanyaolaide(m): 9:34pm On Jan 17, 2022 |
Will you like to join our #chemistry whatsapp class, send this info to our number or me PRIVATELY. Class: Full name: Whatsapp Number: Location/State: |
Science/Technology / Acids by awosanyaolaide(m): 6:04pm On Jan 13, 2022 |
Study Acids with us: Its definition Classes Types Properties Preparations. Happy study with our online class. We answer your online call in #chemistry. Reach out now. 1 Share
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Science/Technology / Ph Of A Buffer Solution by awosanyaolaide(m): 1:07pm On Jan 12, 2022 |
pH of a buffer solution discusses Henderson Hasselbalch equation and Calculating the pH of a solution. If you are in search of #Chemistrytutor for self and yours, kindly connect with us now. Thank you for connecting with your online tutor.
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Science/Technology / Metals And Non-metals by awosanyaolaide(m): 12:25pm On Jan 12, 2022 |
Are you interested in learning on metals, non-metals with its properties. See more here. #chemistry
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Science/Technology / Carbon And Its Compound by awosanyaolaide(m): 10:21am On Jan 11, 2022 |
This teaching studies Carbon, Allotropes of Carbon, Graphite, Diamond, Water and Producer Gas. See more here. #chemistry
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Science/Technology / Radioactivity by awosanyaolaide(m): 12:16pm On Jan 10, 2022 |
This focuses on indept teaching on Radioactivity, Nuclear fusion and fission, half life and formula. Please enjoin with us. #chemistry
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Science/Technology / Ask Us by awosanyaolaide(m): 5:14pm On Jan 07, 2022 |
We will like to have feedback from you. Ask us questions in chemistry. We will be our best in answering you. Thank you
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Science/Technology / A New Beginning by awosanyaolaide(m): 10:02am On Jan 06, 2022 |
We will be starting a new teaching series from Friday January 7th, 2022 so we want to hear from YOU FIRST. What topic(s) in #chemistry will you love to be treated, say it here? Thank you.
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Science/Technology / Dalton's Law Of Partial Pressure by awosanyaolaide(m): 9:46am On Jan 06, 2022 |
Dalton's Law of Partial Pressure This is the last law to be treated under Atomic Theory of Gases. Enjoy Studying along with us. Kindly advise on your opinion, comment and engage our teaching series. Thank you.
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Science/Technology / Vapour Density Of Gas And Graham's Law Of Diffusion by awosanyaolaide(m): 11:35am On Jan 05, 2022 |
Today series is focusing on Vapour Density of Gas and Graham's Law of Diffusion. It answers the following questions: 1. The relationship between vapour density and molecular mass, 2. Relation between rate of diffusion and density, 3. Relation between rate of diffusion and molecular mass? Enjoy studying chemistry with us. More to come.. You can also connect for more teachings on our facebook page.
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Science/Technology / Ideal Gas Law, Avogadro's Hypothesis And Gay-lussac's Law by awosanyaolaide(m): 8:14am On Jan 04, 2022 |
In this series, We will be reviewing Ideal Gas Law, Avogadro's Hypothesis and Gay-Lussac's law. Kindly comment your view and note recommendation is welcome. Enjoy #chemistry #science
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Science/Technology / Boyle's Law, Charles' Law, General Gas Law by awosanyaolaide(m): 2:01pm On Jan 03, 2022 |
Delivered as promised, the following series teaching certain laws under Atomic Theory: Boyle's Law, Charles' Law and General Gas Law. More sessions to come... #chemistry #science
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Science/Technology / Chemistry Teaching Series by awosanyaolaide(m): 10:32pm On Jan 01, 2022 |
Hello, I teach Chemistry, i will commit to sharing my personally prepared notes here, believing it will benefit someone. I actually started sharing it on my facebook page (Olabest Chemical Supplier and Services) some months earlier and i see it helpful. Hope it will be of profit to many here too. Starting here on Monday 3rd January, 2022. Be expectant. 1 Like |
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