Recent questions in Chemistry

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An atom of an element has the electronic configuration 2.8.2

asked Jul 28, 2021 in Chemistry Form 2 by anony mous

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An element y has the electronic configuration of 2:8:5 which period of the periodic table does, the element belong

asked Jul 27, 2021 in Chemistry Form 2 by monicahwangombe

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Write down the electronic configuration of the atoms with the following atoms with the following atomic numbers

asked Jul 27, 2021 in Chemistry Form 2 by anony mous

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Other than their location in the atom, name two other differences between an electron and a proton.

asked Jul 27, 2021 in Chemistry Form 2 by anony mous

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An element y has an electron arrangement of 2.8.5

asked Jul 27, 2021 in Chemistry Form 2 by anony mous

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The Diagram below is set-up for the laboratory preparation of oxygen gas.

asked Jul 27, 2021 in Chemistry Form 1 by anony mous

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The diagrams below represent two iron nails with some parts covered tightly with zinc and tin respectively. What observations would be made at the exposed points R and Z if the wrapped nails are left in the open for several days? Explain.

asked Jul 27, 2021 in Chemistry Form 1 by anony mous

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Fractional distillation of liquid air is usually used to separate various gaseous mixtures in air. Explain how to

asked Jul 27, 2021 in Chemistry Form 1 by anony mous

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A solution of hydrogen chloride in water reacts with zinc carbonate but a solution of the gas in methylbenzene does not. Explain

asked Jul 27, 2021 in Chemistry Form 2 by anonymous

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The reaction between hot concentrated sodium hydroxide and chlorine gas produces sodium chlorate (V) as one of the products

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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Study the diagram below and answer the questions that follow:

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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Other than manufacture of sulphuric(VI) acid state two other uses of sulphur(IV) oxide.

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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Below is a set of apparatus that was used to obtain a dry sample of sulphur(iv)oxide gas

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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The flow chart below shows some industrial processes. Use it to answer the questions that follow

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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Study the diagram below and answer the questions that follow

asked Jul 27, 2021 in Chemistry Form 2 by anonymous

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The grid below shows a part of the periodic table. The letters do not represent the actual symbols. Study it and answer the questions that follow.

asked Jul 27, 2021 in Chemistry Form 2 by anonymous

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Describe how burning can distinguish CH2CH2 from CH3CH3

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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Study the flow diagram below and then answer the questions that follow.

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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Draw and name two isomers of Pentane()

asked Jul 27, 2021 in Chemistry Form 3 by anonymous

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Air was passed through several reagents as shown below

asked Jul 27, 2021 in Chemistry Form 1 by anonymous

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