a) Ca(OH)2 / Calcium hydroxide
b) Removal of water hardness
- Test the presence of CO2 gas
- Raising of pH in acidic soils
c) Ca(OH)2(aq) + 2NH4Cl(aq)----->CaCl2(aq) + 2NH4OH(aq)
maurice.mutuku answered the question on September 25, 2019 at 08:01
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a) Give the type of structure and bonding that is present in substance A.
b) Which substance is likely to be sodium chloride. Explain.
c) Which one of the substance is likely to be plastic?
i) Explain why the substance you have given in (c) above behaves in the way it does
d) Give the type of structure and bonding that is present in substance A
Date posted: September 25, 2019. Answers (1)
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a) What observation would be made if gas H was ignited.
b) When the experiment was repeated using lead powder instead of Beryllium very little of gas H was obtained. Give a reason for this observation.
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Identify
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ii) Solution R
iii) Solution Q
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Date posted: September 25, 2019. Answers (1)
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(Na = 23, S = 32, O = 16)(Solved)
A compound contains 29.1% sodium, 40.5% sulphur and the rest is oxygen. Find the empirical formulae.
(Na = 23, S = 32, O = 16)
Date posted: September 25, 2019. Answers (1)
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Date posted: September 25, 2019. Answers (1)
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i) Temperature is raised.
ii) Pressure is changed.(Solved)
Given the equation 
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i) Temperature is raised.
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Date posted: September 25, 2019. Answers (1)
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Date posted: September 25, 2019. Answers (1)
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(i) Identify the bonds labelled M and N
(ii) What is the difference between bonds M and N?
Date posted: September 25, 2019. Answers (1)
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When solid M is dissolved in water, it dissolves to form a blue solution. Addition of ammonia solution forms a blue precipitate which dissolves in excess to form a deep blue solution. Write the formula and name of the ion responsible for the deep blue solution.
Date posted: September 25, 2019. Answers (1)
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Determine...(Solved)
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Determine the empirical formula of P.
Date posted: September 25, 2019. Answers (1)
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(ii) If after 112 days 
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Date posted: September 25, 2019. Answers (1)
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Explain.(Solved)
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(i) Name:
I. Process Y
II. Substances R and C
III. Process W
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(iii) State one use of polymer X
Date posted: September 23, 2019. Answers (1)
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Date posted: September 23, 2019. Answers (1)