Answers by anonymous

0 votes

20cm³ of a solution containing 4g per litre of sodium hydroxide was neutralized by 8.0cm³ of dilute sulphuric acid.Culculate the concentration of sulphuric acid in moles per litre.(Na=23,O=16,H=1).

answered Aug 17, 2021 in Chemistry Form 3

0 votes

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

answered Aug 17, 2021 in Chemistry Form 1

0 votes

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

answered Aug 17, 2021 in Chemistry Form 1

0 votes

An ion T2- has an electronic arrangement of 2.8

answered Aug 17, 2021 in Chemistry Form 2

0 votes

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.

answered Aug 17, 2021 in Chemistry Form 3

0 votes

State Gay-Lussac’s law

answered Aug 17, 2021 in Chemistry Form 3

0 votes

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

answered Aug 17, 2021 in Chemistry Form 2

0 votes

In terms of structure and bonding explain the following

answered Aug 17, 2021 in Chemistry Form 2

0 votes

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

answered Aug 17, 2021 in Chemistry Form 3

0 votes

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

answered Aug 17, 2021 in Chemistry Form 3

0 votes

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

answered Aug 17, 2021 in Chemistry Form 1

0 votes

Below is a cross- section of a charcoal burner

answered Aug 17, 2021 in Chemistry Form 2

0 votes

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).

answered Aug 17, 2021 in Chemistry Form 4

0 votes

What is a binary electrolyte.

answered Aug 17, 2021 in Chemistry Form 4

0 votes

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.

answered Aug 17, 2021 in Chemistry Form 4

0 votes

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

answered Aug 17, 2021 in Chemistry Form 1

0 votes

What is an alkali

answered Aug 17, 2021 in Chemistry Form 1

0 votes

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.

answered Aug 17, 2021 in Chemistry Form 3

0 votes

Name the compound below

answered Aug 17, 2021 in Chemistry Form 3

0 votes

Name a compound that causes temporary hardness of water.

answered Aug 17, 2021 in Chemistry Form 2

Page:

« prev
1
...
25
26
27
28
29
30
31
...
118
next »

...