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Basically 1 mole of something means you have as many grams as its mass number - ie 1 mole of O2 (oxygen molecule) is 32g (16x2). It also means you have 6.02 x 10^23 of them...
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I can't understand why people are frightened of new ideas. I'm frightened of the old ones. -- John Cage (1912 - 1992)
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