Chemistry Tuition Questions - Miracle Learning Centre

Chemistry Tuition Questions

22 May Chemistry Tuition Q

Posted at 06:11h in Chemistry Tuition Questions by admin

7) Aqueous hydrogen peroxide is used to sterilise contact lenses. At room temperature, aqueous hydrogen peroxide decomposes very slowly to form water and oxygen. The decomposition can...

22 May ScienceDirect Topics

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a) (i) Give evidence from the diagram which demonstrates that the above reaction is exothermic. ……………………………………………………………………………………………… (ii) Construct the balanced chemical equation for the above reaction....

12 May

Posted at 08:22h in Chemistry Tuition Questions by admin

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Terephthoyl chloride and ethylene glycol react by polymerisation to produce a polymer called poly(ethylene terephthalate), commonly known as PET. PET is used to make soft...

12 May

Posted at 08:06h in Chemistry Tuition Questions by admin

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Terephthoyl chloride and ethylene glycol react by polymerisation to produce a polymer called poly(ethylene terephthalate), commonly known as PET. PET is used to make soft...

12 May

Posted at 07:30h in Chemistry Tuition Questions by admin

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Methane, CH4, is the major constituent of natural gas. (a) Draw a dot-and cross-diagram to show how the outer shell electrons are arranged in methane. (b) At a...

12 May

Posted at 07:26h in Chemistry Tuition Questions by admin

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3 . Methane, CH4, is the major constituent of natural gas. (a) Draw a dot-and cross-diagram to show how the outer shell electrons are arranged in methane. ...

09 May ScienceDirect Topics

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(a) Suggest why boron nitride with structure A can be used as a lubricant. ...

09 May O Level | IP Chemistry Tuition

Posted at 10:43h in Chemistry Tuition Questions by admin

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Several small pieces of magnesium are placed on a block of solid carbon dioxide. The solid carbon dioxide is at a temperature of -60 °C. The...

07 May

Posted at 04:55h in Chemistry Tuition Questions by admin

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9. Cement is made by heating clay with crushed calcium carbonate. During this process, the calcium carbonate is first converted to calcium oxide. (a) Suggest why calcium...

05 May ScienceDirect Topics

Posted at 08:36h in Chemistry Tuition Questions by admin

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2 .        Sorrel is a small green plant.
(a)        The pigments in the sorrel leaf can be separated by chromatography.
(i)         Describe how chromatography can...

05 May

Posted at 08:18h in Chemistry Tuition Questions by admin

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Although certain bacteria in the soil convert nitrogen gas into nitrates, other bacteria convert nitrogen into ammonium salts. The ionic equation for this second reaction is N2...

05 May IP Chemistry Tuition

Posted at 08:17h in Chemistry Tuition Questions by admin

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Although certain bacteria in the soil convert nitrogen gas into nitrates, other bacteria convert nitrogen into ammonium salts. The ionic equation for this second reaction is N2...

05 May

Posted at 08:16h in Chemistry Tuition Questions by admin

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5 In the Periodic Table, how many periods include the elements of atomic numbers 1-18? A ...

05 May

Posted at 08:09h in Chemistry Tuition Questions by admin

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9. Which graph shows the number of electrons in the outer shell of an atom, plotted against the proton (atomic) number for the first ten elements...

05 May

Posted at 08:04h in Chemistry Tuition Questions by admin

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13 Which quantity is the same for one mole of ethanol and one mole of ethane?
A. mass
B....