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Chemistry Alevel question help plss

Q. What is the number of hydrogen atoms in 0.125 mol of C2H5OH?

I don't understand why after multiplying by avogadro's number we must also multiply by 6?? i how u can have more moles of an element and have less moles of the whole compound
Original post by arti_k
Q. What is the number of hydrogen atoms in 0.125 mol of C2H5OH?

I don't understand why after multiplying by avogadro's number we must also multiply by 6?? i how u can have more moles of an element and have less moles of the whole compound

You multiply by six because there are six hydrogen atoms for every ethanol molecule. Don’t forget that the question asks for how many ATOMS and not moles there are. There are 6xAvagadros number of hydrogen atoms for every mole of ethanol.

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