# eli5 Converting Grams to Mols

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I’m really struggling on understanding how to do these conversions and I am hoping someone can help me understand it step by step. I have a midterm exam this week and I really want to grasp this concept. D: The question goes:

Wine is produced by the fermentation of grapes. In fermentation, the carbohydrate glucose (C6H12O6) is converted to ethanol (C2H6O) and carbon dioxide (CO2), according to the given balanced equation.
C6H12O6=2C2H6O+2CO2

How many grams of ethanol (C2H6O) are formed from 0.95 mol of glucose (C6H12O6)? Be sure your answer has the correct number of significant figures.

In: Chemistry

Chemical equations are written in moles – you can think of a mole as if it’s representing *one* molecule (although in reality it is representing a large but still very specific number of molecules).

So the equation here says that one mole of C6H12O6 becomes 2 moles of C2H6O and 2 moles of CO2

They give you moles to begin with, which is nice of them. You have 0.95 moles of C6H12O6, which becomes (0.95×2) or 1.9 moles of C2H6O. Now you just need to get grams.

Now the molar mass of C2H6O is 46.068 g/mol (googled it but you can find this yourself easily if your teacher requires it – if you need this explanation then let me know). 1.9 moles at 46.068 g/mol is 87.53 grams, at two sig figs that’s 88 grams.