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The oxidation number of an ion is the same as its charge. We know that the oxidation number of K+ is +1 and the oxidation number of O2- is -2, but we don't know the oxidation number of Mn so let's call th...

a) Our first step is to replace 3(x^2) with 3(4^2) as x=4. Remembering BIDMAS (Brackets, Indices, Division, Multiplication, Addition, Subtraction), we know we must first work out the value of 4 squared, a...

As temperature increases more particles posses energy equal to or greater than activation energy. Due to that, particles collide more often increasing rate of reaction.

Mitosis occurs in all human cells, producing two genetically identical daughter cells containing a full set of chromosomes (diploid). This process takes place to replace old cells, in wound healing and in...

Once you've got a good grasp on your material, it's really useful to spend a bit of time thinking about the most efficient ways you could organise it. For example, if you are asked 'how is this piece a ty...