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(a) 2:8:8
(b) Ne
(c) GT2
maurice.mutuku answered the question on August 14, 2019 at 10:05
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Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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i. When evaporating Ethanol.
ii. When heating to dryness a hydrated salts.(Solved)
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ii. When heating to dryness a hydrated salts.
Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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The table below gives some information about four elements. The letters are not their actual symbols.
i. Write the electron arrangement of any element in same chemical family as element L.
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iii. Account for the difference in ionic and atomic radii of element M.
Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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Solutions may be classified as strong basic, weakly acidic, strong acidic. The information below gives solutions and their PH values. Study it and answer the questions that follow.
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ii).Which ions are pre-dominantly in solution C?
Date posted: August 5, 2019. Answers (1)
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Date posted: August 5, 2019. Answers (1)
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b) The catalyst used in the process is finely divided iron. Why iron is finely divided?
c) In the Haber process the conversion of nitrogen and hydrogen into ammonia is only 10%.
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d) A part from iron catalyst and pressure of 500 atmospheres, name any other condition required for this process.
Date posted: August 5, 2019. Answers (1)
- The table below gives some elements of the periodic table and their atomic masses, atomic numbers and melting points. The letters are not the actual...(Solved)
The table below gives some elements of the periodic table and their atomic masses, atomic numbers and melting points. The letters are not the actual symbols of the elements.
(a) Select two elements with oxidation states of -3.
(b) Which elements represent the most powerful reducing agent? Explain.
(c) Which element has the highest ionization energy?
(d) Select two elements which when reacted form a compound that conducts electricity both in molten and aqueous state.
(e) Select any two elements which when reacted form a compound that dissolves in water to form an acidic solution.
(f) Using dots (●) and crosses (X) to represent electrons; draw diagrams to show bonding between B and J.
(g) Explain why for some elements the atomic mass is not twice the atomic number.
(h) Explain why the melting point of element K is higher than that of element D.
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Date posted: August 5, 2019. Answers (1)
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Date posted: July 7, 2019. Answers (1)
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Date posted: June 28, 2019. Answers (1)
- RCOO- Na+ and RC6H5SO3- Na+, represent two cleansing agents where R is a long hydrocarbon chain.
Write the formulae of the salts that would be...(Solved)
R COO─ Na+ and RC6H5SO3─ Na+, represent two cleansing agents where R is a long hydrocarbon chain.
Write the formulae of the salts that would be formed when each of these cleansing agents is added to water containing calcium ions.
Date posted: June 24, 2019. Answers (1)