This is the direct change of a solid to gas without passing through liquid state and direct change of gas to solid without passing through the liquid state.
mainakelvin39 answered the question on September 26, 2017 at 08:34
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Define the term chromatography?
(Solved)
Define the term chromatography?
Date posted:
September 26, 2017
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Answers (1)
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Name three methods used in separation of mixtures?
(Solved)
Name three methods used in separation of mixtures?
Date posted:
September 26, 2017
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Answers (1)
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What is a conductor?
(Solved)
What is a conductor?
Date posted:
September 26, 2017
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Answers (1)
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Define the term flame?
(Solved)
Define the term flame?
Date posted:
September 26, 2017
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Answers (1)
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An experiment was carried out to investigate the rate of reaction shown below
Sucrose ?Fructose + Glucose ...
(Solved)
An experiment was carried out to investigate the rate of reaction shown below
Sucrose →Fructose + Glucose
For the products fructose and glucose to be formed, it was found that substance K was to be added and the temperature maintained at 370C. When another substance L was added, the reaction slowed down and eventually stopped
a) Suggest the identify of substances K and L
b) Other than temperature state three ways by which the rate of reaction could be increased
c) Explain how substance L slowed down the reaction
Date posted:
September 25, 2017
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Answers (1)
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Write an equation for the reaction that takes place when equal volumes of chlorine gas react with propane
(Solved)
Write an equation for the reaction that takes place when equal volumes of chlorine gas react with propane
Date posted:
September 25, 2017
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Answers (1)
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Gas Q takes 100 seconds to diffuse through a porous pot. Gas Q has a relative molecular mass of 34. Determine how long it will...
(Solved)
Gas Q takes 100 seconds to diffuse through a porous pot. Gas Q has a relative molecular mass of 34. Determine how long it will take sulphur (IV) oxide gas to diffuse under the same condition? (S = 32, O = 16,)
Date posted:
September 25, 2017
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Answers (1)
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What is meant by hard water?
(Solved)
What is meant by hard water?
Date posted:
September 25, 2017
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Answers (1)
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Briefly describe what happens when solids are heated
(Solved)
Briefly describe what happens when solids are heated
Date posted:
September 24, 2017
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Answers (1)
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Explain the Kinetic Particle Theory
(Solved)
Explain the Kinetic Particle Theory
Date posted:
September 24, 2017
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State the uses of water in frasch process
(Solved)
State uses of water in frasch process
Date posted:
September 24, 2017
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Answers (1)
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Why is a glass container for sampling and storage inappropriate
(Solved)
Why is a glass container for sampling and storage inappropriate
Date posted:
September 20, 2017
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State two chemical tests for the presence of water
(Solved)
State two chemical tests for the presence of water
Date posted:
September 19, 2017
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Answers (1)
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What is oxidation agent?
(Solved)
What is oxidation agent?
Date posted:
September 19, 2017
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Answers (1)
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What is oxidation?
(Solved)
What is oxidation?
Date posted:
September 19, 2017
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Answers (1)
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State two applications of radioactivity in medicine.
(Solved)
State two applications of radioactivity in medicine.
Date posted:
September 19, 2017
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Answers (1)
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Explain why calcium Oxide is not used to dry hydrogen chloride gas.
(Solved)
Explain why calcium Oxide is not used to dry hydrogen chloride gas.
Date posted:
September 19, 2017
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Answers (1)
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Sulphur is extracted from underground deposits by frasch process. State two physical properties of Sulphur that makes it possible to be extracted through this process.
(Solved)
Sulphur is extracted from underground deposits by frasch process. State two physical properties of Sulphur that makes it possible to be extracted through this process.
Date posted:
September 19, 2017
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Answers (1)
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Name a suitable drying agent for hydrogen chloride gas
(Solved)
Name a suitable drying agent for hydrogen chloride gas
Date posted:
September 19, 2017
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Answers (1)
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Explain why iodine is a bad conductor of heat and electricity
(Solved)
Explain why iodine is a bad conductor of heat and electricity
Date posted:
September 19, 2017
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Answers (1)