2013-02-01 16:09
USE OF UNLEADED PETROL;-premature combustion of petrol in car engines result in knocking which causes loss in the power of the car.To prevent knocking,lead compounds such as tetra-ethyl le… Read More
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hydrogen sulphide
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lubricating oil
rating
ammonium
sulphide
bonding
boric acid
control method
chemical
TO TELL THE SECRET OF THE CHEMISTRY BEHIND ALL WHAT TRANSPIRES IN OUR EVERYDAY LIFE.
2013-01-14 18:12
Super heated water emitted from boreholes in the ground in tuscany which have a temperature ranging from 150-260degree celsius and contains a relatively content of boric acid..Exploitation… Read More
2013-01-02 07:12
The crush feed is dissolved in hot water,the siliceous gangue whch accompanies it is removed by thickening and filtration,after which the product is cropped by distillation and dried..In an… Read More
2012-12-26 12:29
A minor… Read More
2012-12-15 19:56
Scientists discovered that branched chain structure of hydrocarbon produced a very high performance..A compound known as iso--octane was discovered to be the best performance and was ass… Read More
2012-12-08 23:36
Nitrogen is one of the most abundant element on earth but plants are deficient of it..Explain?AnswerBecause it requires a high energy to break the bond present in the atom which will b… Read More
2012-11-30 16:08
Because crude oil is a mixture of hydrocarbons with different boiling temperatures,it can be seperated by distillation into groups of hydrocarbons that boils between two specified boiling po… Read More
2012-11-27 16:08
A number of contaminants are found in crude oil..As the fractions travel through the refinery processing units,these impurities can damage the equipment,the catalysts and the quality of the… Read More
2012-11-23 13:19
Do you know that the production,accumulation and preservation of undegraded organic matters are perquisites for the existence of petroleum source rocks..Organic matter can be defined as mate… Read More
2012-11-18 19:49
Petroleum processing and refining involves a series of steps by which the original crude oil is converted into products with desired qualities in the amounts dictated by the market..The refi… Read More
2012-11-18 19:47
APPARATUS--->Round-bottomed flask, Condenser, Measuring cylinder, conical flask, Glass rod stirrer suction pump, suction funnel, filter paper, capillary tube....REAGENT--->1-chloro-2… Read More
2012-11-16 22:36
Place 100mg ascorbic acid in 100ml standard flask and make it up to the mark[1mg/ml],prepare the standard curve of the vitamin c by adding the required weight of the ascorbic acid to the ext… Read More
2012-11-01 19:37
It is the contamination of soil system by considerable quantities of chemicals or other substances resulting in the reduction of its fertility or productivity with respect to the qualitative… Read More
2012-10-25 11:12
This is thermodynamics,a very peculiar topic in CHEMISTRY..The universe is composed of the system and the surrounding..The system can be any object[an engine or chemical cell] or quantity of… Read More
2012-10-18 22:20
On an analytical balance,measure 2grams of cobalt[ii]chloride and 0.4grams of ammonium chloride,pour the two into a beaker and add 5ml of water...,add 1.0g of activated charcoal into the sol… Read More
2012-10-17 03:30
It is a temperature change in natural water bodies caused by human influence, such as use of water as coolant in a power plant..Light pollution, includes light trespass, over-illumination an… Read More
2012-10-17 03:14
Lipids include fats, oils, waxes, cholesterol, other sterols, and most steroids. In the body, fat serves as a source of energy, a thermal insulator and cushion around organs, and an import… Read More
2012-10-17 03:13
Fats and oils make up 95% of food lipids and phospholipids, and sterols make up the other 5%. Traditionally, fats were considered to be solid at room temperature, and oils were considered… Read More
2012-10-17 03:13
The protein backbone is formed from the peptide bonds created from the amino and carboxyl groups of each monomer that repeat the pattern -N-C-C- or C-C-N-. The number and sequence of amino a… Read More
2012-10-17 03:12
Enzymes are protein polymers that possess the ability to specifically “recognize” biological molecules, bind to them, and catalyze a chemical reaction. In contrast to non prote… Read More
2012-10-17 03:11
Weigh out 7.0g of CUSO4.5H20 on a triple-beam or other rough balance.weigh the solid either on a clean piece of paper without coloured strips or a small beaker and not directly on the balanc… Read More
2012-10-17 03:10
Asbestos is the name given to a number of naturally occurring fibrous minerals that are minedfor their useful properties such as thermal insulation, chemical and thermal stability,and high t… Read More
2012-10-17 03:09
Those materials are made from urea formaldehyde also known as urea-methanal, named so for its common synthesis pathway..it is made from urea and formaldehyde heated in the presence of… Read More
2012-10-17 03:08
The atmosphere provides materials for life processes on earth,it also serve as a transport medium which transfer water from ocean to land,it protects and prevent the earth from cosmic rays a… Read More
2012-10-17 03:06
Obtain a 5ml sample cobalt[ii]chloride solution..the sample must contain 1g of cocl2...place the cobalt solution into a 150ml beaker and add 0.2g of ammonium chloride and 11ml of concentrate… Read More
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