lundi 22 septembre 2014

What is a mole?

Not really a sceptical question, but does anyone have a simple definition of a mole, in chemistry for my daughter, who is very confused about what it means?



We've googled it but most of the definitions are complex (though correct, I'm sure) and difficult to understand for one who is just starting chemistry at this level and is struggling with basic concepts (and one (me!) who probably never fully grasped the concept and anyway hasn't done chemistry for very many years).



Thanks in advance,



Yuri




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