Chemistry is a broad scientific field, and its relevance is seen in almost every aspect of society, including medicine, cooking, environmental processes, cleaning and manufacturing goods
emmanuel milimo answered the question on January 11, 2018 at 11:20
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Differentiate between conductors and non-conductors
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Differentiate between conductors and non-conductors.
Date posted:
January 8, 2018
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(i) What is a mixture (ii) Give various ways used to separate a mixture
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(i) What is a mixture (ii) Give various ways used to separate a mixture
Date posted:
January 8, 2018
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Answers (1)
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Explain why factories use alot of energy as heat energy to obtain nitrogen while root nodules obtain in room temperature
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Explain why factories use alot of energy as heat energy to obtain nitrogen while root nodules obtain in room temperature.
Date posted:
January 7, 2018
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What is the chemical name of perspex?
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What is the chemical name of perspex?
Date posted:
January 4, 2018
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Answers (1)
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A hydrated salt has the following composition by mass. Iron 20.2%, Oxygen 23.0%, Sulphur 11.5%, Water 45.3%. Its relative formula mass is 278. determine the...
(Solved)
A hydrated salt has the following composition by mass. Iron 20.2%, Oxygen 23.0%, Sulphur 11.5%, Water 45.3%. Its relative formula mass is 278. Determine the formula of hydrated salt
Date posted:
December 31, 2017
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Answers (1)
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Which is the best method to separate sodium chloride from a solution of potassium chloride and sodium chloride mixture?
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Which is the best method to separate sodium chloride from a solution of potassium chloride and sodium chloride mixture?
Date posted:
December 30, 2017
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Answers (1)
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What is a burette?
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What is a burette?
Date posted:
December 28, 2017
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Answers (1)
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State and explain what is observed when a burning piece of magnesium is lowered into a gas jar containing dry chlorine gas
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State and explain what is observed when a burning piece of magnesium is lowered into a gas jar containing dry chlorine gas
Date posted:
December 26, 2017
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Answers (1)
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What is a compound?
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What is a compound?
Date posted:
December 23, 2017
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Answers (1)
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What is an element?
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What is an element?
Date posted:
December 23, 2017
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Answers (1)
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Give the observations made when lead (ii)nitrate is heated strongly and write a balanced chemical equations to show the action
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Give the observations made when lead (ii)nitrate is heated strongly and write a balanced chemical equations to show the action
Date posted:
December 21, 2017
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Answers (1)
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Carbon and silicon are in the same group of the periodic table. Silicon (iv) oxide melts at 2440°c while solid carbon (iv) oxide sublimes...
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Carbon and silicon are in the same group of the periodic table. Silicon (iv) oxide melts at 2440°c while solid carbon (iv) oxide sublimes at -70°c. In terms of structure and bonding, explain this difference.
Date posted:
December 21, 2017
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Answers (1)
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Distinguish between a covalent and dative bond
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Distinguish between a covalent and dative bond
Date posted:
December 21, 2017
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Answers (1)
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Given a mixture of iron (ii) oxide ammonium chloride sodium chloride and lead(ii) chloride describe how this mixture can be separated to obtain a sample...
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Given a mixture of iron (ii) oxide ammonium chloride sodium chloride and lead(ii) chloride, describe how this mixture can be separated to obtain a sample of each.
Date posted:
December 21, 2017
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Answers (1)
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What is bleaching?
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What is bleaching?
Date posted:
December 20, 2017
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Answers (1)
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What is the equation for the reaction between aluminum oxide and hydrochloric acid?
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What is the equation for the reaction between aluminum oxide and hydrochloric acid?
Date posted:
December 19, 2017
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Answers (1)
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Describe how a double aqueous ammonium ii sulphate can be prepared using the following reagents: aqueous ammonia,dilute sulphuric acid and iron metal.
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Describe how a double aqueous ammonium ii sulphate can be prepared using the following reagents: aqueous ammonia, dilute sulphuric acid and iron metal.
Date posted:
December 18, 2017
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Answers (1)
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Explain why the solution of ethane in water does not show acidic properties while that if hydrochloric acid shows
(Solved)
Explain why the solution of ethane in water does not show acidic properties while that of hydrochloric acid shows.
Date posted:
December 18, 2017
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Answers (1)
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Explain how to test for the purity of a liquid
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Explain how to test for the purity of a liquid
Date posted:
December 18, 2017
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Answers (1)
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State and explain the observation that would be made when hydrogen chloride gas is bubbled into a solution of silver nitrate
(Solved)
State and explain the observation that would be made when hydrogen chloride gas is bubbled into a solution of silver nitrate.
Date posted:
December 17, 2017
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Answers (1)