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If a reaction is exothermic, it means that it gives out energy, heating up its surroundings, and so the products have less energy than the reactants.

If a reaction is endothermic, it means that it ...

Using "vous" shows respect towards elder people or people one meets for the first time. It is used for example with teachers, higher ranked colleagues and salesmen.

"Tu" is used...

To differentiate y=(x²+4x)⁵ you need to use the chain rule. The chain rule uses the fact that dy/dx = dy/dt * dt/dx. 

Here we create a new variable t, where t = x²+...

Writing a personal statement can be alot harder than you initially think.  Personally, I recommend writing the main body before writing the beginning and end.  Making a list of everything you want to get ...

Role plays in MMI interviews are used to test verbal communication and non verbal communication ands scenarios can range from counselling to breaking bad news. The interviewers will be looking for you to ...