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.
Determine the number of molecules of ethanol (C2H5OH) in 47.0 g.
Can someone explain to me how to do this?
2 answers
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
2 answers