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- What are allotropes?(Solved)
What are allotropes?
Date posted: February 19, 2019. Answers (1)
- Iron filings were put in a test tube containing powdered sulphur then heated on a Bunsen flame. Stop heating when reaction starts. State and explain...(Solved)
Iron filings were put in a test tube containing powdered sulphur then heated on a Bunsen flame. Stop heating when reaction starts. State and explain the observations made. Test the effects of a magnet on the mixture before and after heating. Explain
Date posted: February 19, 2019. Answers (1)
- Moist/damp/wet blue and red litmus papers were put in a gas jar containing air/oxygen. Burning sulphur was then lowered into the gas jar. State and...(Solved)
Moist/damp/wet blue and red litmus papers were put in a gas jar containing air/oxygen. Burning sulphur was then lowered into the gas jar. State and explain the observation made
Date posted: February 19, 2019. Answers (1)
- State three physical properties unique to Sulphur(Solved)
State three physical properties unique to Sulphur
Date posted: February 19, 2019. Answers (1)
- State and explain the Allotropes of Sulphur(Solved)
State and explain the Allotropes of Sulphur
Date posted: February 19, 2019. Answers (1)
- 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)