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How many liters of 10 percent alcohol solution must be mixed with 70 liters of a 70 percent solution to get a 30 percent solution?
210Type your answer here...
What is 70 percent alcohol and what is 95 percent alcohol which is better to use and why?
70% alcohol means in hundred parts of it, 70 parts are pure alcohol, rest is water. 95% means 95 parts of pure alcohol in 100 parts, so 5 parts of water. It depends on the usage. As a solvent, 95% would be preferred. As antiseptic, both can be used, 75% being more common as medicinal spirit. For consumption, fairly dilute concentrations are preferred. Above 43% are rare so both the above concentrations are dangerous for consumption.
Why 70 percent ethyl alcohol is used rather than 90 percent or 95 percent?
70% alcohol has been found to be more effective in killing microbes.Higher and lower concentration may not be as effective.90% alcohol coagulate proteins in contact.suppose 90% alcohol is poured over one celled organism,the alcohol penetrate the cellwall of the organism.the coagulated protein would then prevent the alcohol further from the cell and no more coagulation then take place.now,if 70% alcohol is added into one celled organism.The diluted alcohol also coagulates the protein, but at a slower rate,so that it penetrates all the cell before coagulation.Then all the cell coagulated and the organism died.
Why use the 70 percent ethanol?
to save the ethanol
What is the smell of isopropyl alcohol 70 percent?
Isopropyl alcohol has a rather strong alcohol smell. If you were to smell regular alcohol and smell 70% Isopropyl alcohol you would have the same smell. However, there is no general way to explain it other than a strong bitter and sometimes sweet smell. It depends on solely your olfactory membranes. Smell's are after all different to everyone.
What fraction of 10 percent alcohol should be mixed with 70 percent alcohol to obtain 50 percent alcohol?
2/3 of 70% and 1/3 of 10%
How 70 percent alcohol affect slide of plant cell?
basically go and open your vag or penis and have sex instead of worrying about bloody science
Why 40 percent alcohol cheaper than 70 percent alcohol?
Because the concentration of alcohol is lower; you pay the alcohol not the water.
Why is 70 percent isopropyl alcohol more expansive than 40 percent isopropyl alcohol?
It is difficult and expensive to refine anything to 100% purity. Best to use 70% as it is just as effective and cost a whole lot less.
Why 70 percent alcohol is used for sterilization not 100 percent?
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.
Is 70 percent isopropyl alcohol a mixture?
Yes, it is.
What percent of car crashes involve alcohol?
about 70%
What percent alcohol does firefly vodka contain?
35 percent 70 proof
What is the Difference between 70 percent and 50 percent rubbing alcohol?
20%
What is the solvent in 70 percent alcohol?
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!)
Why 70 percent alcohol used in laboratory?
70 percent alcohol is used in laboratories because it has a higher penetrative power than higher concentrations, allowing it to effectively disrupt the cell walls of microorganisms. It also evaporates more slowly than higher concentrations, providing more contact time for disinfection. Additionally, 70 percent alcohol is less flammable and less likely to damage surfaces compared to higher concentrations.
How many liters of 10 percent alcohol solution must be mixed with 70 liters of a 70 percent solution to get a 30 percent solution?
210Type your answer here...
