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The mark scheme requires that you provide a 'multi-causal response' for you to score full marks. This should mean that you provide two or three reasons why there were disagreements. Also, make sure that i...

Imagine you have an object moving through time, like a car on the road. The distance that car travels=xThe speed of that object=f’(x)This is because speed is defined as the the rate of change of distance ...

Firstly, we need to write a balanced equation for the oxidation of Fe²⁺ to Fe³⁺ . We know that when something is oxidised, it is losing electrons, making the half equation: Fe^2+...