Questions by anonymous

0 votes

1 answer

A mixture of Hydrogen gas and Carbon (IV) oxide are passed through Potassium hydroxide solution as shown below.

asked Aug 17, 2021 in Chemistry Form 1

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1 answer

Using dot (.) and cross (x) diagram show the type of bond present in hydrogen ion, H3O+ (H = 1, O = 8)

asked Aug 17, 2021 in Chemistry Form 1

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1 answer

An ion T2- has an electronic arrangement of 2.8

asked Aug 17, 2021 in Chemistry Form 2

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1 answer

10cm3 of a gaseous hydrocarbon, CxHy required 30cm3 of oxygen for complete combustion. If steam and 20cm3 of Carbon (IV) oxide were produced, what is the value of x in CxHy.

asked Aug 17, 2021 in Chemistry Form 3

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2 answers

State Gay-Lussac’s law

asked Aug 17, 2021 in Chemistry Form 3

0 votes

1 answer

The set-up below was used to prepare a solution of hydrogen chloride gas

asked Aug 17, 2021 in Chemistry Form 2

0 votes

1 answer

In terms of structure and bonding explain the following

asked Aug 17, 2021 in Chemistry Form 2

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1 answer

State three factors that increase the rate of reaction for the following reaction.

asked Aug 17, 2021 in Chemistry Form 3

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1 answer

The empirical formula of a hydrocarbon is C2H3. The hydrocarbon has a relative molecular Mass of 54. (H = 1, C = 12)

asked Aug 17, 2021 in Chemistry Form 3

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1 answer

The diagram below represents paper chromatogram of four types of sugar.

asked Aug 17, 2021 in Chemistry Form 1

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1 answer

Below is a cross- section of a charcoal burner

asked Aug 17, 2021 in Chemistry Form 2

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1 answer

An element F has a relative atomic mass of 88. When a current of 0.5 amperes was persed through the fused chloride of F for 20 minutes and 20 seconds, 0.278g of F were deposited at the cathode. Determine the charge on ion of F (1Faraday = 9650ºC).

asked Aug 17, 2021 in Chemistry Form 4

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1 answer

What is a binary electrolyte.

asked Aug 17, 2021 in Chemistry Form 4

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1 answer

Explain why concentrated Sulphuric (VI) acid is a poor electrolyte and has no effect on blue litmus paper whereas 2M Sulphuric (VI) acid conducts electricity and changes blue litmus paper red.

asked Aug 17, 2021 in Chemistry Form 4

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1 answer

The solubility of Potassium Manganate (VII) at 20ºC is 13g per 100g of water and at 90ºC is 60g per 100g of water.

asked Aug 17, 2021 in Chemistry Form 1

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1 answer

What is an alkali

asked Aug 17, 2021 in Chemistry Form 1

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1 answer

A white solid dissolve in water to form a colourless solution. The colourless solution forms a white precipitate with Ammonia solution but dissolve in excess alkali. The colourless solution forms a white precipitate with Lead (II) Nitrate solution. The white Precipitate dissolve on warming to form a colourless solution.

asked Aug 17, 2021 in Chemistry Form 3

0 votes

1 answer

Name the compound below

asked Aug 17, 2021 in Chemistry Form 3

0 votes

1 answer

Name a compound that causes temporary hardness of water.

asked Aug 17, 2021 in Chemistry Form 2

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1 answer

Lime water is also used to soften hard water. Why is this method not preferred to soften hard water.

asked Aug 17, 2021 in Chemistry Form 2

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