Asked by Lola
Determine the number of molecules of ethanol (C2H5OH) in 47.0 g.
Can someone explain to me how to do this?
Can someone explain to me how to do this?
Answers
Answered by
DrBob222
Convert 47.0 g to moles.
moles = grams/molar mass.
Convert moles to # molecules.
There are 6.02 x 10^23 molecules in 1 mole of anything.
moles = grams/molar mass.
Convert moles to # molecules.
There are 6.02 x 10^23 molecules in 1 mole of anything.
Answered by
bobpursley
yes. You know in one mole, there are 6.02*10^23 molecules.
So the deal is to find how many moles. Find the molmass first(12*2+1*5+16*1+1=46 checkthat, and do it more accurately)
moles= 47/46
number molecules: 47/46 * avagnumber
So the deal is to find how many moles. Find the molmass first(12*2+1*5+16*1+1=46 checkthat, and do it more accurately)
moles= 47/46
number molecules: 47/46 * avagnumber
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