Water's composition is H2O (two hydrogen atoms and an oxygen atom), while alcohol has molecules that are bound to carbon (e.g. ethanol is C2H6O, or two carbon, six hydrogen, and one oxygen atom), which would be an impurity if found in pure water. Therefore, no alcohol is present in pure water.
distillation
Rubbing alcohol is a solution. What you buy labeled as rubbing alcohol is a mixture of various concentrations of methanol, ethanol, isopropanol, and water, usually around 70% alcohol and the rest water.
yes water is: tasteless colorless scentless
No it would lower it. This is why de-icer is often alcohol (methanol) based. Alcohol turns to a solid (freezes) at a lower temperature then pure water. Freezing point of pure methanol is -98C
In plain tap water, there is no alcohol. There is no alcohol present in any water unless it is labeled that there is alcohol in water. Alcohol can be dumped into the ocean, and then alcohol would be in water, but generally, there is no alcohol in water.
Pure alcohol is transparent, pretty much like water.
distillation
Pure isopropyl alcohol would evaporate more quickly than a mixture of isopropyl alcohol and water. This is because water has a higher boiling point than isopropyl alcohol, which would slow down the evaporation process of the mixture compared to pure isopropyl alcohol.
30% of however much you drank... e.g. You drank a 50ml shot of 60 proof = 15ml of 'pure' alcohol
A drop of water in a jar of pure alcohol would be water dissolved in alcohol.
Isopropyl alcohol itself a pure substance. It is a compound. However, it is sold as a mixture of the alcohol itself and water.
Ethanol..
yes
to make a 40% alcohol
Rubbing alcohol is a solution. What you buy labeled as rubbing alcohol is a mixture of various concentrations of methanol, ethanol, isopropanol, and water, usually around 70% alcohol and the rest water.
Yes, as ethanol is pure alcohol 5% of water would not be enough to get a rid of the alcohol.
If it's pure alcohol... none.