small intestine
The liver.
jejunum
diffusion
The primary absorption site for digestible carbohydrates is the small intestine. Digestible carbohydrates are also referred to as net carbohydrates.
See this site for absorption spectra of many gasses; (check related link)
Stomach and Small Intestine
It is the main site of water re-absorption.
Small intestine
The liver.
the higher the proof or alcohol percentage the faster the absorption
A high fat meal will slow the absorption of alcohol.
A full stomach will slow the absorption.
A full stomach reduces the rate of alcohol absorption.
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These do not speed up the absorption of alcohol. The typical body processes alcohol at the rate of 1 unit per hour. There is no quick fix for absorption. Although I'm not sure about the effect of fruit punch on alcohol absorption, carbonated beverages DO increase alcohol absorption, I think the previous answer is confusing alcohol absorption with alcohol metabolism. In particular the increased temperature of your body causes the CO2 gas to come out of solution and speeds up alcohol assimilation into the blood stream. Assuming the same amount of alcohol as a non-carbonated beverage, the increased speed of assimilation will increase the rate at which alcohol can go to your body's tissues (with the exception of fat), ALTHOUGH this will not change the rate of your liver's alcohol metabolism.
The reason why intoxicated people drink coffee is not to slow the absorption of alcohol into the body, but to use caffeine as a stimulant, to counteract the depressant effect of alcohol. One drug fights against the other. But no, coffee does not slow the rate of alcohol absorption into the bloodstream.
jejunum