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In iron, all the atoms are of the same size so the layers can slide past each other. In steel, there are both carbon and iron atoms which are different sizes, meaning the layers are disrupted and cannot e...

boiling point 102°C freezing point –2°C
We shall now look at the molecular origin of the lowering of the freezing point and elevation of the boiling point. First of all, we know that the entropy of ...

Step 1, pick out the important information from the question: Carbon: Hydrogen: Oxygen % by weight: 64.8: 13.62: 21.58 Step 2, from the periodic table, find out the relative atomic masses of each element:...

A catalyst is something that speeds up the rate of reaction, without being consumed during the reaction. If a catalyst is used in a reaction, it will only speed up the forward and backward reaction, howev...

delocalised pi electronslower e density than alkeneshalogen carrier is needed to generate more powerful electrophile so reaction can take place with benzene
draw benzene and resonance hybrids