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a) 1
b) Alkali metals
john3 answered the question on November 12, 2017 at 12:55
- An aqueous solution of hydrogen chloride gas reacts with manganese (IV) oxide to form chlorine gas while a solution of hydrogen chloride in methylbenzene does...(Solved)
An aqueous solution of hydrogen chloride gas reacts with manganese (IV) oxide to form chlorine gas while a solution of hydrogen chloride in methylbenzene does not react with manganese (IV) oxide. Explain
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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Give one harmful effect of radioisotopes
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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Magnesium sulphate may be used as a laxative. What does this term laxative mean
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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Explain why water fetched in rocky areas tend to boil at higher temperature than distilled 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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(a) Noble gas are usually unreactive. Explain this phenomena.
(b) Explain the meaning of the term ductility a property found in metals
Date posted: November 9, 2017. Answers (1)
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Date posted: November 9, 2017. Answers (1)
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Compare the reactivity of chlorine and bromine
Date posted: November 9, 2017. Answers (1)