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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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The Short Story No Need to Lie Cancer may not be a terminal disease as most people take it to be. Write an essay in support of the above statement drawing your illustrations in Rolf Schmid's story, No Need to Lie.

asked Jul 5, 2021 in Memories We Lost and Other Stories by anony mous

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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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Henrik Ibsen, A Doll's House Love and care are the virtues that sustain a family. Using Nora in Ibsen's ADH, write an essay in support of the above statement.

asked Jul 5, 2021 in A Doll's House by anony mous

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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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Study the equation below and answer the questions that follow:

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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Dry ammonia gas was passed over heated copper(II) oxide.

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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Study the table below and use it to answer the questions that follow. (The letters do not represent the actual symbols of the elements). Element S P Q R T Atomic Number 5 20 3 18 5 Atomic mass 10 40 7 40 11 Select two letters that represent a pair of isotopes

asked Jul 5, 2021 in Chemistry Form 2 by anonymous

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Give one negative effect of continuous use of nitrogenous fertilizers

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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Determine the percentage of nitrogen in ammonium nitrate fertilizer (N=14.0, H=1.0,0=16.0 )

asked Jul 5, 2021 in Chemistry Form 3 by anonymous

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State two applications of using impurities to lower the melting point of substances.

asked Jul 5, 2021 in Chemistry Form 2 by anonymous

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Calculate the volume of carbon(IV)oxide in 9,000 m3 of air contained in a room.

asked Jul 5, 2021 in Chemistry Form 2 by anonymous

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Why is the percentage of carbon (IV) oxide in the atmosphere fairly constant?

asked Jul 5, 2021 in Chemistry Form 2 by anonymous

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The standard electrode potentials of a metal H and Iron are given below.

asked Jul 5, 2021 in Chemistry Form 4 by anonymous

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2 answers

Fill in the blank spaces with the appropriate question tags.

asked Jul 5, 2021 in Grammar by anony mous

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For each of the following sentences replace the underlined phrasal verbs with one word that that has the same meaning.

asked Jul 5, 2021 in Grammar by anony mous

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Rewrite the following sentences as instructed

asked Jul 5, 2021 in Grammar by anony mous

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