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Exothermic reaction.
Mr Masinde answered the question on May 5, 2018 at 08:09
- What is meant by the following as used in chemistry. (i) Solubility (ii) Saturated solution(Solved)
What is meant by the following as used in chemistry.
i.) Solubility
ii.) Saturated solution
Date posted: April 30, 2018. Answers (1)
- Suggest a reason why BaSO4(a pigment made from sulphuric acid) would be
suitable in making paint for cars.(Solved)
Suggest a reason why BaSO4(a pigment made from sulphuric acid) would be
suitable in making paint for cars.
Date posted: April 29, 2018. Answers (1)
- What are the properties of alpharadiation?(Solved)
What are the properties of alpha radiation?
Date posted: April 26, 2018. Answers (1)
- What is an Isotope?(Solved)
What is an Isotope?
Date posted: April 24, 2018. Answers (1)
- Why are anesthetics useful in medicine?(Solved)
Why are anesthetics useful in medicine?
Date posted: April 24, 2018. Answers (1)
- Nitric v acid is manufactured by catalytic oxidation of ammonia gas (a) Name two raw materials other than ammonia that are used to manufacture the acid.....(Solved)
Nitric v acid is manufactured by catalytic oxidation of ammonia gas
a. Name two raw materials other than ammonia that are used to manufacture the acid
b. Name the catalyst used.
c. Write an equation for reaction between nitric v acid and ammonia gas
d. sate one use of product in c
Date posted: April 24, 2018. Answers (1)
- A mixture contains iron(III)chloride, zinc(II)oxide and potassium chloride. Describe how each of the substance can be obtained from the mixture(Solved)
A mixture contains iron(III)chloride,zinc(II)oxide and potassium chloride. Describe how each of the substance can be obtained from the mixture.
Date posted: April 23, 2018. Answers (1)
- A sample of calcium chloride is contaminated with anhydrous aluminum chloride. Explain how a sample of calcium chloride can be obtained from the mixture(Solved)
A sample of calcium chloride is contaminated with anhydrous aluminum chloride. Explain how a sample of calcium chloride can be obtained from the mixture
Date posted: April 23, 2018. Answers (1)
- Substance Q has a melting point of 15°C and boiling point of 70°c.
(a)On the same axis,draw the melting point and boiling point graph for Q...(Solved)
Substance Q has a melting point of 15°C and boiling point of 70°c.
(a)On the same axis,draw the melting point and boiling point graph for Q and the room temperature.
(b)State the physical state of substance Q at room temperature.
Date posted: April 22, 2018. Answers (1)
- Octane and ethanol are liquids at a room temperature. Ethanol is soluble in water while octane is insoluble. Explain how water can be used to...(Solved)
Octane and ethanol are liquids at a room temperature. Ethanol is soluble in water while octane is insoluble. Explain how water can be used to separate the mixture of octane and ethanol.
Date posted: April 22, 2018. Answers (1)
- Explain why ammonium trioxocarbonate (iv) leaves no residue when heated(Solved)
Explain why ammonium trioxocarbonate (iv) leaves no residue when heated
Date posted: April 22, 2018. Answers (1)
- Write chemical equation for reaction between dry hydrogen gas and heated lead (ii) oxide(Solved)
Write chemical equation for reaction between dry hydrogen gas and heated lead (ii) oxide.
Date posted: April 21, 2018. Answers (1)
- (i) What is rusting?
(ii) Give the chemical name of rust.(Solved)
(i) What is rusting?
(ii) Give the chemical name of rust.
Date posted: April 21, 2018. Answers (1)
- Explain the term fractional crystallization(Solved)
Explain the term fractional crystallization.
Date posted: April 21, 2018. Answers (1)
- Describe the process of extraction of Aluminium by electrolysis(Solved)
Describe the process of extraction of Aluminium by electrolysis.
Date posted: April 20, 2018. Answers (1)
- State uses of radio isotopes in the following: 1. Medicine 2. Agriculture 3. Industries(Solved)
State uses of radio isotopes in the following:
1. Medicine
2. Agriculture
3. Industries
Date posted: April 19, 2018. Answers (1)
- Given the following reagents describe how to prepare lead (ii) sulphate, Solid potassium sulphate, solid lead (ii) carbonate, dilute nitric (iv) acid and distilled water.(Solved)
Given the following reagents describe how to prepare lead (ii) sulphate: Solid potassium sulphate, solid lead (ii) carbonate, dilute nitric (iv) acid and distilled water.
Date posted: April 19, 2018. Answers (1)
- What are the advantages of universal indicators over other acid-base indicators?(Solved)
What are the advantages of universal indicators over other acid-base indicators?
Date posted: April 19, 2018. Answers (1)
- The heat of fusion and vaporization of water are 334.4Kj and 1159.4 Kj respectively. Explain why there is a big difference between the two
(Solved)
The heat of fusion and vaporization of water are 334.4Kj and 1159.4 Kj respectively. Explain why there is a big difference between the two
Date posted: April 18, 2018. Answers (1)
- A crystal of copper (II) sulphate was placed in a beaker of water. The beaker was left standing for two days without shaking. State and...(Solved)
A crystal of copper (II) sulphate was placed in a beaker of water. The beaker was left standing for two days without shaking. State and explain the observations that were made.
Date posted: April 17, 2018. Answers (1)