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Explain the reaction of ethene with acidified potassium permanganate.
Date posted:
April 27, 2019
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Explain the reaction of Nitrogen (IV) oxide with alkalis.
Date posted:
April 27, 2019
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Explain the reaction of nitrogen (IV) oxide with magnesium.
Date posted:
April 27, 2019
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Describe the process for preparation of Nitrogen (IV) oxide.
Date posted:
April 27, 2019
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Describe the procedure for preparation of Nitrogen (II) oxide.
Date posted:
April 27, 2019
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Describe the preparation of nitrogen (I) oxide.
Date posted:
April 27, 2019
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Describe the reaction of Nitrogen with burning magnesium.
Date posted:
April 27, 2019
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Describe the process of preparation of nitrogen from Ammonia.
Date posted:
April 27, 2019
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Describe the chemical process of preparing nitrogen using Removal from liquid air method.
Date posted:
April 27, 2019
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By use of a diagram illustrate Fractional distillation of liquid air.
Date posted:
April 27, 2019
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Describe the procedure for Preparation of nitrogen using isolation from air method.
Date posted:
April 26, 2019
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Name the process where propane gas molecules are converted to a giant molecule.
Date posted:
April 25, 2019
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Gas K diffuses through a porous material at a rate of 12cm^3/s whereas S diffuses through the same material at rate of 75cm^3/s. Given that the molecular mass of k is 16 calculate the molar mass of s
Date posted:
April 17, 2019
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When excess carbon dioxide is passed over lead oxide in a combustion tube, lead (II) oxide is reduced.
(a)Write an equation for the reaction which took place
(b)What observations was made in the combustion tube when the reaction was complete
(c)Name another gas which would be used to reduce lead (II) oxide
Date posted:
April 16, 2019
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Describe tests for common cations in the laboratory.
Date posted:
April 12, 2019
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Give the procedure,observation and conclusions for testing for the common anions in the laboratory.
Date posted:
April 12, 2019
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Give the procedure,observation and conclusions for testing of common gases in the laboratory.
Date posted:
April 12, 2019
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Discuss the Fehling's test for reducing sugars.
Date posted:
April 12, 2019
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Describe the electrolysis of lead bromide.
Date posted:
April 12, 2019
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Describe an experiment to estimate the size of an oil molecule.
Date posted:
April 12, 2019
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Describe how Oxygen gas is prepared,collected and tested in the laboratory.
Date posted:
April 12, 2019
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Using a solid naphthalene as an example,describe how impurities affects the melting point of a substance.
Date posted:
April 12, 2019
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Explain how a burette is used.
Date posted:
April 12, 2019
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Draw and name the apparatus used in the laboratory.
Date posted:
April 12, 2019
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Describe an experiment to demonstrate the purity of water using boiling point.
Date posted:
April 11, 2019
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State three examples of allotropes of carbon.
Date posted:
April 9, 2019
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Define the following terms as used in chemistry: atom,molecule, element and compound
Date posted:
April 9, 2019
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Describe how the mixture of sugar, iodine and lead (II) carbonate can be separated.
Date posted:
April 9, 2019
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The diagram below shows an investigation on a property of ammonia gas.
(a) The platinum wire is observed to glow. Explain the cause of that observation.
(b) State the observations made when the rubber bang is removed.
Date posted:
April 1, 2019
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The molar masses of gases W and X are 16.0 and 44.0 respectively. If the rate of diffusion of W through porous material is 12cm3s-1. Calculate the rate of diffusion of X through the same material.
Date posted:
April 1, 2019