Crush the nuts using mortar and pestle, then add appropriate solvent such as acetone. Filter the mixture to get a solution of oil in acetone as the filtrate.
Expose the filtrate to sun for acetone to evaporate leaving oil in the dish.
raphael answered the question on February 1, 2017 at 05:19
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A mixture contains ammonium chloride, copper (II) oxide and sodium chloride. Describe how each of the substances can be obtained from the mixture.
(Solved)
A mixture contains ammonium chloride, copper (II) oxide and sodium chloride. Describe how each of the substances can be obtained from the mixture.
Date posted:
January 31, 2017
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Answers (1)
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Describe a laboratory experiment that can be used to show that the action of heat on hydrated cobalt (II) chloride is a reversible action.
(Solved)
Hydrated cobalt (II) chloride exists as pink crystals and anhydrous cobalt (II) chloride is a blue powder. Describe a laboratory experiment that can be used to show that the action of heat on hydrated cobalt (II) chloride is a reversible action.
Date posted:
January 31, 2017
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Answers (1)
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State and explain the change in mass that occurs when the following substances are separately heated in open crucibles
(Solved)
State and explain the change in mass that occurs when the following substances are separately heated in open crucibles.
(a) Copper metal
(b) Copper (II) nitrate
Date posted:
January 31, 2017
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Answers (1)
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(Solved)
What are the differences between luminous and no-luminous flames?
Date posted:
January 28, 2017
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Answers (1)
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(Solved)
What is molar heat of vaporization? Explain.
Date posted:
January 16, 2017
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Answers (1)
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Describe how a pure sample of zinc sulphate can be prepared in the laboratory starting with zinc oxide
(Solved)
Starting with zinc oxide, describe how a pure sample of zinc sulphate can be prepared in the laboratory.
Date posted:
January 16, 2017
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Answers (1)
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A form three student added sodium carbonate solution to a solution of aluminium chloride in water
(Solved)
A form three student added sodium carbonate solution to a solution of aluminium chloride in water. A white precipitate was formed. The precipitate soon dissolved liberation a colourless gas.
i) What is the white precipitate?
ii) Explain why the precipitate dissolves?
Date posted:
January 16, 2017
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Answers (1)
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Name the two types of Bunsen burner flame and state the conditions under which each one of them is formed
(Solved)
Name the two flames produced by a Bunsen burner and the conditions under which they are produced.
Date posted:
January 16, 2017
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Answers (1)
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State two factors that should be considered when choosing a fuel for cooking?
(Solved)
What factors should be considered when choosing a fuel for cooking?
Date posted:
January 14, 2017
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Answers (1)