70% alcohol signifies the amount the alcohol present in 100 ml of the solution. Considering the solvent to be water, 70% alcohol contains 70ml alcohol and 30ml water. Thus, the total comes out to 70 + 30 = 100ml. That's what the "%" signifies - (out of 100!)
100 percent Isopropyl Alcohol is commonly used as a disinfectant for surfaces, medical equipment, and skin. It is also used in laboratories for cleaning and in manufacturing processes for dissolving substances. Additionally, it can be used in certain beauty and grooming products.
First of all, because technological limits mean that we can only get alcohol at a purity of about 90%. 90% alcohol is also far more expensive than 70%, so it is more cost effective to use 70%. Ignoring all of that, the main reason is that 70% alcohol works just fine and sterilizes object very well.70%alcohol is the efficient concentration to denature the protein.
Acetylene itself is odorless. However, commercial-grade acetylene is usually mixed with a trace amount of a substance called ethyl mercaptan to give it a distinct smell for safety reasons in case of leaks.
70% alcohol solution is more effective for sterilization compared to higher concentrations like 100% alcohol because it has a lower evaporation rate, allowing it to stay in contact with the bacteria or viruses longer to kill them. A 70% alcohol solution also penetrates the bacterial cell membrane more effectively, denaturing proteins and disrupting cell function. Additionally, 70% alcohol is less likely to damage surfaces or instruments being sterilized.
odorless tasteless liquid expands upon freezing freezing point 0° C boiling point 100° C maximum density at 4° C
50% alcohol Proof ÷ 2 = % alcohol
100% alcohol is more effective because of the more alcohol concentration in the drink.
You mix the pure alcohol with something else, for example, water.
They sell an 80 proof(40% alcohol) and a 100 proof(50% alcohol).
it means that for every 100 ml of the drink in question 18 ml of that 100 ml will be alcohol
Let x be the ounces of 15% alcohol solution. The amount of alcohol in the 15% solution is 0.15x, and the amount of alcohol in the 23% solution is 0.23(100 - x). Setting up the equation 0.15x + 0.23(100 - x) = 0.15(100) solves for x, which is approximately 38.5 ounces of the 15% alcohol solution needed.
50% alcohol Proof ÷ 2 = % alcohol
Pure alcohol is far more dangerous than adulterated alcohol because pure alcohol has one hundred percent alcohol in comparison to aldulterated alcohol which is less than 100 percent.
In biology, water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is essential for all known forms of life. It serves as a solvent for many biochemical reactions, acts as a medium for transport and lubrication, and helps regulate temperature in living organisms.
50% alcohol.
99% is pretty close to 100%, so the mix would be 40% alcohol and 60% ginger ale.