Recent questions in Chemistry

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Identify substances : (2 marks) Gas B Liquid C Gas D Which property of concentrated sulphuric (VI) acid is being demonstrated by formation of the black solid (

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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Air was passed through reagents as shown below.

asked Jul 5, 2021 in Chemistry Form 1 by anonymous

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Explain why hard water flowing in lead pipes may be safer for drinking than soft water flowing in the same pipes

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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In terms of structure and bonding, explain why propane (RMM=44 ) is a gas at room temperature while ethanol (RMM=46) is a liquid at room temperature

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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In an experiment to determine the solubility of solid W in water at 400c, the following results were obtained.

asked Jul 5, 2021 in Chemistry Form 1 by anonymous

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2 answers

Define solubility.

asked Jul 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

Study the flow chart below and use it to answer the questions that follow.

asked Jul 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

The diagram below shows an experiment involving chlorine water.

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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Highlight the steps followed when lighting a Bunsen burner

asked Jul 5, 2021 in Chemistry Form 1 by anonymous

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With the aid of a well labeled diagram, show that the almost colourless region of a non luminous flame consist of unburnt gases

asked Jul 5, 2021 in Chemistry Form 1 by anonymous

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State one use of radioactivity in agriculture.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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A radioactive isotope M decays by emitting two alpha and a beta particle to form 206 83Y.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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A student burnt magnesium ribbon in a gas jar full of sulphur (IV) oxide gas.

asked Jul 5, 2021 in Chemistry Form 1 by anonymous

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1 answer

Given that the structure of soap is C17H35COONa.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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A student fetched water from a river in a limestone area. He used it for washing and realized that it did not lather easily. On boiling, the water lathered easily .When he added washing soda, it again lathered easily

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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100cm3 of Carbon (IV) Oxide diffuses through a porous plate in 30 seconds. Calculate the time taken by 75cm3 of Nitrogen (IV) Oxide to diffuse through the same plate under similar conditions. (C = 12, 0 = 16, N = 14)

asked Jul 5, 2021 in Chemistry Form 1 by anonymous

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State Graham’s law of diffusion.

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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A solution contains 5.3g of X2CO3 in 500 cm3 of solution. 25.0 cm3 of this solution required 20.0 cm3 of 0.25M hydrochloric acid for complete neutralization. The equation for the reaction is;

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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Study the following equilibrium equation.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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The set up below was used to prepare dry hydrogen gas. Study it and answer the questions that follow.

asked Jul 5, 2021 in Chemistry Form 1 by anonymous

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