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why does silicon dioxide have such a high melting/boiling point?

It has a giant lattice structure, strong covalent bonds are difficult to break etc.

KD
Answered by Kian D. Chemistry tutor
4913 Views

1. X with 2,4-DNPH forms a red precipitate. 2. X reduces blue Copper ions into red precipitate. What kind of compound is X?

X with 2,4 DNPH (Brady's reagent) is used to show the presence of an aldehyde or ketone. X also reduces Copper ions (Fehling's) meaning it has to be an aldehyde and not a ketone as ketones are not readily...

TA
Answered by Tom A. Chemistry tutor
5286 Views

What is parliamentary sovereignty?

Parliamentary sovereignty is the idea that representative in parliament exercise ultimate control over British law and the actions of the British state. It is understood by the British political elite to ...

FA
Answered by Fraser A. Politics tutor
3222 Views

Discuss the advantages and disadvantages of the parliamentary law-making procedure.

There are obvious advantages to the parliamentary law-making procedure, just as there are disadvantages. One of the main advantages of the procedure is that it is democratic; democratically elected MPs ca...

LP
Answered by Liliana P. Law tutor
45156 Views

What are the main functions of the liver?

The liver has 4 main functions. In detoxification, toxins (poisonous chemicals produced by living cells or organisms) are broken down, often by enzymes found in the liver, for example catalase which break...

AJ
Answered by Abigail J. Biology tutor
3990 Views

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