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i) Fractional distillation
ii) difference in boiling points
-difference in densities
john3 answered the question on November 12, 2017 at 13:06
- During extraction of iron in the blast furnace, state the uses of the following in the furnace. (a) Molten slag (b) Waste gases leaving the...(Solved)
During extraction of iron in the blast furnace, state the uses of the following in the furnace.
a) Molten slag
b) Waste gases leaving the furnace
c) Limestone
Date posted: November 12, 2017. Answers (1)
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What observation would be made if chlorine gas is bubbled through aqueous potassium iodide?
Explain
Date posted: November 12, 2017. Answers (1)
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An element in period 4 of the periodic table forms a basic oxide of formula P2O.
a) What is the valency of P?
b) What name is given to the group of elements in which element P belongs
Date posted: November 12, 2017. Answers (1)
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Date posted: November 12, 2017. Answers (1)
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Date posted: November 12, 2017. Answers (1)
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Date posted: November 10, 2017. Answers (1)
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Date posted: November 10, 2017. Answers (1)
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Date posted: November 10, 2017. Answers (1)
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Name the intermolecular forces of attraction in water.
Date posted: November 9, 2017. Answers (1)
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Carbon (II) oxide, methane and hydrogen are major sources of energy.
i) State and explain three reasons why hydrogen is a very attractive fuel.
ii) State one disadvantage of using hydrogen fuel instead of methane.
Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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(a) What is air pollution?
(b) State four gaseous substances present in unpolluted air
Date posted: November 9, 2017. Answers (1)
- a) Why is air considered as a mixture rather than a compound ? (b) State one similarity between rusting and combustion of iron.(Solved)
(a) Why is air considered as a mixture rather than a compound ?
(b) State one similarity between rusting and combustion of iron.
(c) Explain why iron nails rust faster in sodium chloride solution than in tap water.
Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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Copper (II) Sulphate crystals were placed in a beaker containing water. State and explain the observations made after two days.
Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)