Sythe Users: What Do They Know? Do They Know Things?? Lets Find Out!

[Xier0]

789.24 g of pure ethanol at 293.15 K consumes 1.00 L of volume.

789.24g ethanol + 1000g water = 1.9274 L 50% ABV solution at your temp

818.97g ethanol + 1037.7g water = 2.0 L 50% ABV solution at your temp

 

1035 g water 818 g ethanol?

Wrong

My last last try:

0.78924a + 0.9982b = .91384 * 2000 //Density of water/alcohol mixture @ 50% ABV is 0.91384g/ml

a + b = 2000 //Total volume must be 2000 mL

Let's use Gauss' elimination to solve this system


1 		1	        2000.00   	
0,78924     0,9982              1827.68   //L2 -> L2 - 0.78924 * L1


~
			
1		1		2000    
0		0.20896	        249.2   


0.20896b = 249.2

b = 249.2/0.20896

b = 1192,573 ml

a + b = 2000

a + 1192.573 = 2000

a = 807.427

Jim needs to mix 1192,573ml of water with 807,427ml of alcohol
to get 2L of 50% ABV solution

Wrong working wrong answer

needs more than 2L of total starting fluid to get 2L of fluid at the end due to thermodynamics I believe as it releases some heat and contracts, will check later and do some work on it, have some class sht to get dun b4 thanksgiving break >_<

True that volume is not a conserved quantity and more is needed to start. Wrong in thinking that this is due to heat.

This shouldn't be that difficult, I'll give it a show.

To start with we have pure ethanol: C2H6O

In order to make this in to 2L we need to add some classic H2O

C2H6O + H2O

By using Grant's Law of Conservation of Food as clearly stated in book 7, we can determine that ethanol has 3 letters and water has 2, as a result, we have a 3:2 molar mass ratio. However this is where many people go wrong, they typically forget to add the molar mass with the overall molarity of the ethanol solution. Which is ~46g.

So in 2L, we get a 3:2 ratio, with an added amount of 46g.

So we actually end up with 92g OVER 2L, in order to actually amount to 2L in the end.

So it becomes 40% of 2L + 46g of H2O PLUS 60% of 2L + 46g of ethanol.


That was a pain, but not incredibly difficult, got any more?

Wrong answer but working partially correct. Mass is a conserved quantity unlike volume.

789.24g ethanol + 1000g water = 1.9274 L 50% ABV solution at your temp

818.97g ethanol + 1037.7g water = 2.0 L 50% ABV solution at your temp

Wrong.

 

[Lilmj27]

Wrong answer but working partially correct. Mass is a conserved quantity unlike volume..

Do I get a partial reward?

 

[Lilmj27]

True that volume is not a conserved quantity and more is needed to start. Wrong in thinking that this is due to heat.

Is it due to the fact that some is give off as O2 or CO or something like that

 

Is it due to the fact that some is give off as O2 or CO or something like that

No. It's due to the geometry of the molecules. They become closer together when concentrations are around 1:1.

Nobody got the answer, you'd all fail miserably working at a distillery.

ABV (Alcohol by volume) is defined as

the number of millilitres of pure ethanol present in 100 millilitres of solution at 20°C.

First, to clarify:
The density of pure ethanol at 293.15 K is 789.24 g/L.
The density of pure water at 293.15 K is 998.20 g/L.

Working at 293.15 K: If you take 789.24 g of ethanol and put it in a beaker, it will consume 1 L of volume. If you take 998.20 g of water and put it in a beaker it will consume 1L of volume. But when you combine them the final solution actually consumes less than 2 L of volume. This is a problem because the definition of ABV is (volume of ethanol)/(total volume of solution).

In fact the way to work this out is to do an experiment or use an empirical table drawn up by someone who already did the experiment. Simply add 1L of pure ethanol to a container then continue to fill with water until you reach a 2L volume. This is strictly 50% ABV.

Here was the answer:
1071.04 g water (1.07 L)
789.24 g ethanol (1.00 L)

Combined make a total of exactly 2.00 L. There is a 70 ml shrinkage of the volume due to the above mentioned effects.

Stay tuned for the next installment of Sythe Users: What Do They Know? Do They Know Things?? Lets Find Out!

 

the answer is feminism duh cis scum

 

[Accounts Shop]

Wrong


Wrong working wrong answer
.

that's the best I can do never had a chemistry class.

although i would argue that with the correct equations, my working is totally valid

 

No. It's due to the geometry of the molecules. They become closer together when concentrations are around 1:1.

Nobody got the answer, you'd all fail miserably working at a distillery.

ABV (Alcohol by volume) is defined as


First, to clarify:
The density of pure ethanol at 293.15 K is 789.24 g/L.
The density of pure water at 293.15 K is 998.20 g/L.

Working at 293.15 K: If you take 789.24 g of ethanol and put it in a beaker, it will consume 1 L of volume. If you take 998.20 g of water and put it in a beaker it will consume 1L of volume. But when you combine them the final solution actually consumes less than 2 L of volume. This is a problem because the definition of ABV is (volume of ethanol)/(total volume of solution).

In fact the way to work this out is to do an experiment or use an empirical table drawn up by someone who already did the experiment. Simply add 1L of pure ethanol to a container then continue to fill with water until you reach a 2L volume. This is strictly 50% ABV.

Here was the answer:
1071.04 g water (1.07 L)
789.24 g ethanol (1.00 L)

Combined make a total of exactly 2.00 L. There is a 70 ml shrinkage of the volume due to the above mentioned effects.

Stay tuned for the next installment of Sythe Users: What Do They Know? Do They Know Things?? Lets Find Out!

tl;dr = tell me wut pussy tastes like

 

tl;dr = tell me wut pussy tastes like

significantly more fishy than ethanol and water