![20160314_202614[1].jpg](https://i.imgur.com/bAkXFzl.jpg "20160314_202614[1].jpg")
hey i was wondering if my math was correct.
ok
this beer is 13.0% acl
650.618ml
what alcohol is in beer?
2-Methyl-2-butanol
C5H12O
or Ethanol
C2H6O
c is 12.011
h is 1.008
0 is 16
46.07 for c2h6o
c5h12o is 88.151
84.58034 ml in 650.618 ml
1.84 mols for c2h6o
.96 mols in c5h12o
depending on the alcohol
>>7950879
the beer is on the right.
>>7950879
the overwhelming majority of the alcohol is ethanol
there are small amounts of 'congeners' present
>>7950891
how does the math look?
>>7950927
>650mL, 13% assuming by volume
84.5 mL
density of EtOH is 0.789 g/mL
so (84.5mL)*(.789g/mL) = 107.1 g
and at 46.07g/mol we get
2.32 moles of EtOH
This assumes that when combining water and ethanol the volumes are strictly additive which may not actually be true, but in this case I believe any deviation is negligible.
>>7950936
Oh I see, I was thinking it was 1/1 for grams. I was using water.
>>7950936
So about 2.32 mols for ethanol.
>>7950944
No problem, I learned to put density in the equation.
That raises another question, how do they figure out the ACL% content? Do they do it by titration?
>>7950946
https://en.wikipedia.org/wiki/Gravity_%28alcoholic_beverage%29
>>7950879
>this beer is 13.0% acl
Hexagenia is 7.1% and Widowmaker is 10.2%, what are you talkin' about, Willis?!
650 ml beer (approx say only water)
13% alcohol (approx say only ethanol)
--> 0,13* 650 ml = volume(ethanol) = WRONG
mol is fucking cancer why is it used goddamn chemists
>>7950946
Refraction and density.
>>7951305
Because it's better than using masses or blank numbers.
Masses are unwieldy, straight-up numbers get ridiculously large, remember, 1mol is 6.0221 * 10^23 particles.
