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A catalyst provides an alternative pathway for a reaction to take place and therefore helping the reaction to take place at a lower activation energy. In an equilibrium process, a catalyst has no effect on t...

Magnification The magnification is how much bigger a sample object appears under the microscope than it does in real life. Sometimes the total magnification may depend on the value the object lens has magnif...

Universities are looking for passionate students first and foremost. You should make sure your love of the subject shines through. The easiest way to do this is to talk about reading or work experience you'v...

The important thing in this question is the letters. We want to group "like terms" together. This is what makes the expression simpler. I go about this by drawing a different shape around each lett...

Presentational features refer to the way a text is set out on a page, which can include for example the use of images and colour, logos, slogans, shapes, font style and size etc. You need to demonstrate to t...