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This is a typical A Level or Pre-U style Spanish discursive writing or oral question which requires the candidate to respond using a range of tenses and sophisticated vocabulary to talk about things relev...

This question is an acid calculation question so it requires you to recall key formulas relating to weak acids. As the Ka of HCOOH has been given, I would start by writing an expression for Ka. Ka= [HCOO-...

Many alveoli which provide a large surface area for rapid diffusion. The walls of the capillaries are only one cell thick which provides a short diffusion pathway, allowing rapid diffusion. Blood circulat...

First you must figure out your estimates, in this case you can round 2162 down to 2000 and 12.37 to 10 to make your solutions easier. First you must calculate the total number of hours it is going to take...

Stevenson challenges victorian beliefs through the use of the metaphor " So recently restrained down". This seeks to express how victorian men felt entrapped in their own state of mind, as they ...