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A strong introduction is vital for any good essay, as it lends structure to both the reader but also yourself. In order to write a convincing essay you need to outline your points clearly and briefly in t...

Cracking is the process of breaking large Hydrocarbon molecules into smaller ones.
This is carried out to refine fuels and increase the yeild in petrolium refining. 

The atomic mass is made up of all the protons and neutrons (which together form the nucleus) which each have a mass of approx. 1g. Therefore if the mass of the element is 19g and it has 9 protons (proton ...

Cao

Cao + H20 --> Ca(OH)2 

Firstly, it is important to read the question, it says what is the difference so we need to look at the differences between the two processes. Diffussion is the movement of particles from an area of high ...