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Friday, 5 October 2018

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Air pollution



Read the previous post on Pollution to get the concept. 

What is Air Pollution?

This is mainly caused by air-borne particles, such as; smoke, carbon dioxide, Sulphur dioxide, carbon monoxide, Oxides of Nitrogen, hydrocarbons, chloro fluorocarbon, hydrogen Sulphide and dust.

Effects of Air Pollution 
1) It can cause bronchitis.
2) It can cause Silicosis.
3) It can lead to eye and nose irritation.
4) It can poison the blood forming carboxyl haemoglobin.
5) It can green house effect.
6) Dust and smoke can cause asthma.
7) Lead poison can affect children's IQ.
8) Nitrogen oxide irritates the lungs.

Control of Air Pollution 
1) Industries should be sited away from residential areas.
2) Passing of wastes through filters and absorbents should be put to practice.
3) The use of lead free fuels is important.
4) Avoid driving cars that are not well maintained.

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Monday, 1 October 2018

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How to Calculate the percentage mass of an element in a compound



In this article, we are going to take some examples on how to calculate the percentage mass of an element in a compound.

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Tuesday, 11 September 2018

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Chemistry: Molar Mass, Examples and Solutions



Molar mass

The formula mass or molar mass of a compound is the mass of the correctly written formula or one molecule of the compound, obtained by adding together the appropriate relative atomic masses of the atoms of the elements present in the molecule.

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Sunday, 2 September 2018

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Pollution: definition, types, biodegradable and non biodegradable pollutants




What is pollution?
Pollution comes from the Greek word, which means defilement. It may be defined as the addition of materials or energy into the environment; damages it, making it undesirable or unfit for life.

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Wednesday, 15 August 2018

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Density: Saltwater Vs Fresh water

Floating on salt water and fresh water


Here is the article on Density


Is Salt water denser than fresh water? 
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Sunday, 5 August 2018

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Physics: Density, Specific gravity, Buoyancy, Upthrust and Archimedes principle

Density, Specific gravity, Buoyancy, archimedes principles


Density
 This may be defined as the mass per unit volume of an object.

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Machines: Mechanical Advantage, Velocity Ratio and efficiency formula

Mechanical Advantage, Velocity Ratio, efficiency

Machines

A machine is a device that makes work to be done easier and faster. It uses a basic concept of applying effort to overcome load.

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Thursday, 2 August 2018

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Reaction of Hydrogen Chloride with Potassium heptaoxodichromate

Hydrogen Chloride reacts with potassium dichromate

The reaction of Hydrogen Chloride and potassium heptaoxodichromate produces; chlorine, chromium(III) chloride, potassium chloride and water. 

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Wednesday, 1 August 2018

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Chemistry: Separation of iodine and Sulphur Crystals

Separation of Iodine and Sulphur Crystals
Learn how to separate Sulphur crystals and Iodine. 
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Tuesday, 31 July 2018

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Berlin Scholarship Programme 2018 for Journalists (fully funded to Berlin, Germany)

Berlin Scholarship


Application Deadline: August 9th, 2018

This is an opportunity to further your journalist career to attain greater heights.

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