- Which are the two types of polymerization?(Solved)
Which are the two types of polymerization?
Date posted: February 19, 2019. Answers (1)
- What characteristic advantages and disadvantages does synthetic polymers and fibres have over natural polymers?(Solved)
What characteristic advantages and disadvantages does synthetic polymers and fibres have over natural polymers?
Date posted: February 19, 2019. Answers (1)
- What are polymers and fibres and how are they formed?(Solved)
What are polymers and fibres and how are they formed?
Date posted: February 19, 2019. Answers (1)
- Study the scheme below and use it to answer the questions that follow(Solved)
Date posted: February 19, 2019. Answers (1)
- Study the scheme below and answer the following questions(Solved)
Study the scheme below
Date posted: February 19, 2019. Answers (1)
- State the uses of alkanols(Solved)
State the uses of alkanols
Date posted: February 19, 2019. Answers (1)
- What is halogenation?(Solved)
What is halogenation?
Date posted: February 19, 2019. Answers (1)
- Define: 1.Hydrolysis 2.Polymerization/Self addition(Solved)
Define:
1.Hydrolysis
2.Polymerization/Self addition
Date posted: February 19, 2019. Answers (1)
- How do we displace Hydrogen from Water?(Solved)
How do we displace Hydrogen from Water?
Date posted: February 18, 2019. Answers (1)
- What is hydrogenation?(Solved)
What is hydrogenation?
Date posted: February 18, 2019. Answers (1)
- Give the physical properties of alkenes(Solved)
Give the physical properties of alkenes
Date posted: February 18, 2019. Answers (1)
- State the uses of alkanes(Solved)
State the uses of alkanes
Date posted: February 18, 2019. Answers (1)
- Give the physical and chemical Properties of alkanes(Solved)
Give the physical and chemical Properties of alkanes
Date posted: February 18, 2019. Answers (1)
- 9.7 g of a mixture of Potassium hydroxide and Potassium chloride was dissolved to make one litre solution.20.0cm3 of this solution required 25.0cm3 of 0.12M...(Solved)
9.7 g of a mixture of Potassium hydroxide and Potassium chloride was dissolved to make one litre solution.20.0cm3 of this solution required 25.0cm3 of 0.12M hydrochloric acid for completed neutralization. Calculate the percentage by mass of Potassium chloride.(K=39.0,Cl= 35.5)
Date posted: February 18, 2019. Answers (1)
- 25.0cm3 of a mixture of Fe2+ and Fe3+ ions in an aqueous salt was acidified with sulphuric(VI)acid then titrated against potassium manganate(VI).The salt required 15cm3...(Solved)
25.0cm3 of a mixture of Fe2+ and Fe3+ ions in an aqueous salt was acidified with sulphuric(VI)acid then titrated against potassium manganate(VI).The salt required 15cm3 of 0.02M potassium manganate(VI) for complete reaction.
A second 25cm3 portion of the Fe2+ and Fe3+ ion salt was reduced by Zinc then titrated against the same concentration of potassium manganate(VI).19.0cm3 of potassium manganate(VI)solution was used for complete reaction. Calculate the concentration of Fe2+ and Fe3+ ion in the solution on moles per litre.
Date posted: February 18, 2019. Answers (1)
- 46.0g of a metal carbonate MCO3 was dissolved 160cm3 of 0.1M excess hydrochloric acid and the resultant solution diluted to one litre.25.0cm3 of this solution...(Solved)
46.0g of a metal carbonate MCO3 was dissolved 160cm3 of 0.1M excess hydrochloric acid and the resultant solution diluted to one litre.25.0cm3 of this solution required 20.0cm3 of 0.1M sodium hydroxide solution for
complete neutralization. Calculate the atomic mass of "M"
Date posted: February 18, 2019. Answers (1)
- A certain carbonate, GCO3, reacts with dilute hydrochloric acid according to the equation given below
If 1 g of the carbonate reacts completely with 20 cm3...(Solved)
A certain carbonate, GCO3, reacts with dilute hydrochloric acid according to the equation given below
If 1 g of the carbonate reacts completely with 20 cm3 of 1 M hydrochloric acid ,calculate the relative atomic mass of G (C = 12.0 = 16.0)
Date posted: February 18, 2019. Answers (1)
- 20.0cm3 of 0.05 M acidified potassium manganate(VII)solution oxidized 25.0cm3 of Fe2+(aq) ions in 40.0g/l of impure Iron (II)sulphate(VI) to Fe3+(aq) ions. Calculate the percentage impurities...(Solved)
20.0cm3 of 0.05 M acidified potassium manganate(VII)solution oxidized 25.0cm3 of Fe2+(aq) ions in 40.0g/l of impure Iron (II)sulphate(VI) to Fe3+(aq) ions. Calculate the percentage impurities in the Iron (II)sulphate(VI).
Date posted: February 18, 2019. Answers (1)
- You are provided with:
(i)sodium L containing 5.0g per litre of a dibasic organic acid H2X.2H2O.
(ii)solution M which is acidified potassium manganate(VII)
(iii)solution N a mixture of...(Solved)
You are provided with:
(i)sodium L containing 5.0g per litre of a dibasic organic acid H2X.2H2O.
(ii)solution M which is acidified potassium manganate(VII)
(iii)solution N a mixture of sodium ethanedioate and ethanedioic acid
(iv) 0.1M sodium hydroxide solution P
(v) 1.0M sulphuric(VI)
You are required to:
(i)standardize solution M using solution L
(ii)use standardized solution M and solution P to determine the % of sodium ethanedioate in the mixture
Date posted: February 18, 2019. Answers (1)
- You are provided with:
(i)an impure calcium carbonate labeled M
(ii)Hydrochloric acid labeled solution N
(iii)solution L containing 20g per litre sodium hydroxide(Solved)
You are provided with:
(i)an impure calcium carbonate labeled M
(ii)Hydrochloric acid labeled solution N
(iii)solution L containing 20g per litre sodium hydroxide
You are required to determine the concentration of N in moles per litre and the % of calcium carbonate in mixture M.
Date posted: February 18, 2019. Answers (1)