Top answers

Chemistry
GCSE

What is empirical formula and how is it worked out?

This is the lowest/simplest ratio of the molecule. For example propene has the formula C3H6

EW
Answered by Emma W. Chemistry tutor
15907 Views

Why is a diamond harder than graphite if they're made of the same substance?

Both diamond and graphite are made of carbon. Carbon can form a maximum of 4 covalent bonds due to carbon having 4 electrons on it's outer shell. In diamond, each carbon atom forms 4 covalent bonds in ...

CC
55872 Views

What is the equation for complete combustion and what does it require?

The equation for complete combustion is: 

hyrdocarbon + oxygen -> water + carbon dioxide 

A plentiful supply of oxygen is required in order to ensure complete combustion....

CL
10191 Views

Why can graphite conduct electricity?

Graphite is a mineral whose molecular structure is made up of carbon atoms. 

A carbon atom can bind up to 4 other atoms around it (it has 4 electrons in its outer-most shell which it can ...

AS
Answered by Aneesh S. Chemistry tutor
24055 Views

Why can ammonium sulfate be described as a salt?

A salt is an ionic compound which is made up of two groups of oppositely charged ions.
The overall compound of a salt compound must have an overall electrical charge of 0.
Ammon...

CR
Answered by Chloe R. Chemistry tutor
26648 Views

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