1 qualitative elemental analysis which is used to find out the kinds of elements present in a compound.
2 quantitative elemental analysis which is used to find out the relative number of the different kinds of elements.
ngasip answered the question on November 20, 2017 at 14:45
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State the Lewis concept
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State the Lewis concept
Date posted:
November 20, 2017
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Answers (1)
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Explain how an increase in pressure would affect equilibrium position
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Explain how an increase in pressure would affect equilibrium position
Date posted:
November 19, 2017
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Answers (1)
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Define entropy
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Define entropy
Date posted:
November 18, 2017
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Answers (1)
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State Pauli exclusion principle
(Solved)
State Pauli exclusion principle
Date posted:
November 18, 2017
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Answers (1)
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State aufbau principle
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State aufbau principle
Date posted:
November 18, 2017
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Answers (1)
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Calculate the molarity of an aqueous solution containing 3g of urea (molar mass=60) in 250g of H2O
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Calculate the molarity of an aqueous solution containing 3g of urea (molar mass=60) in 250g of H2O
Date posted:
November 18, 2017
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Answers (1)
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Name the first 10 elements of the periodic table of elements in their correct order.
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Name the first 10 elements of the periodic table of elements in their correct order.
Date posted:
November 17, 2017
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Answers (1)
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The diagram below was used to prepare an alkane in the laboratory
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The diagram below was used to prepare an alkane in the laboratory
(i)Write the formular of solid X
(ii)Explain why calcium oxide is added to the mixture above
(iii)Write a balanced equation for the reaction that occurs in the flask
Date posted:
November 16, 2017
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Answers (1)
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Study the set up below and answer questions below
(Solved)
Study the set up below and answer questions below
State and explain the observations that would be made when the circuit is completed.
Date posted:
November 16, 2017
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Answers (1)
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Starting with copper metal describe how a sample of crystals of copper 2 chloride may be prepared
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Starting with copper metal describe how a sample of crystals of copper 2 chloride may be prepared
Date posted:
November 16, 2017
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Answers (1)
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Metals are ductile. Explain
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Metals are ductile.Explain
Date posted:
November 15, 2017
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Answers (1)
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Explain the change in mass that occurs when solid copper(II)nitrate is heated in open crucible.
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Explain the change in mass that occurs when solid copper(II)nitrate is heated in open crucible.
Date posted:
November 15, 2017
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Answers (1)
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State Bohr's assumptions to his model
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State Bohr's assumptions to his model
Date posted:
November 12, 2017
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Answers (1)
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Which catalyst is used in experiment of manufacture of oxygen?
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Chemistry
Date posted:
November 12, 2017
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Answers (1)
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Distinguish between anhydrous and hydrated salts.
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Distinguish between anhydrous and hydrated salts.
Date posted:
November 12, 2017
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Answers (1)
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If an umbrella is touched with a finger on inner surface when it is raining it allows the rain water to leak through. Give a...
(Solved)
If an umbrella is touched with a finger on inner surface when it is raining it allows the rain water to leak through. Give a reason
Date posted:
November 12, 2017
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Answers (1)
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State two factors which determine the speed of photoelectrons emitted from a metal surface
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State two factors which determine the speed of photoelectrons emitted from a metal surface
Date posted:
November 12, 2017
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Answers (1)
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State the main reason for electroplating metallic items.
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State the main reason for electroplating metallic items.
Date posted:
November 12, 2017
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Answers (1)
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Crude oil is a source of many compounds that contain carbon and hydrogen only. (i) Name the process used to separate the components of crude...
(Solved)
Crude oil is a source of many compounds that contain carbon and hydrogen only.
i) Name the process used to separate the components of crude oil.
ii) On what two physical properties of the above components does the separation depend?
Date posted:
November 12, 2017
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Answers (1)
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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
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Answers (1)