0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why 70 percent ethanol is used for sterilization instead of 100 percent?
70% ethanol has been shown to have the highest killing ability of microbes. Also, 100% ethanol is toxic to the user
What are the uses of ethanol?
Alternate fuel source, if you get 70% Ethanol and 30% water w/w you have a very good broad spectrum anti- bacterial, ethanol is used in labs as a solvent to dissolve desired compounds from different materials
What volume of ethanol 96 percent should be added to 500 ml of 70 percent ethanol such that when the mix is made to 2.5l with water the final conc of ethanol is 55 percent?
First calculate how much ethanol you need in the final solution. 55% X 2.5l = 1.375l Then calculate how much ethanol you already have in the solution. 0.5l X 70% = 0.35l Now take the difference between those two numbers as the extra amount needed. 1.375l - 0.35l = 1.025l Now correct for the fact that you are adding only 96% ethanol. 1.025l / 96% = 1.068l Answer: 1.068l
HOW MANY ML OF ETHYL ALCOHOL ARE PRESENT IN A 50 ML OF BOTTLE OF RUBBING ALCOHOL?
Usually zero ml because ethanol is not normally used in rubbing alcohol. However, there is a little Ethanol-based rubbing alcohol and rubbing alcohol is usually 70 percent, so multiply 50 ml x .7 to get your answer.
What are the mole fraction and molality of ethanol -C2H5OH in an aqueous solution that is 45.0 percent ethanol by volume-The density of water is 1.00g per mL and that of ethanol is 0.789 grams per mL?
The mole fraction and molality of ethanol -C2H5OH in an aqueous solution that is 45.0 percent ethanol by volume and the density of water is 1.00g per mL that of ethanol is 0.789 grams per mL and 70/18. A mole fraction in chemistry is the amount that is divided by the total amount of all constituents.
Is 70 percent ethanol the same with 70 percent ethanol?
Absolutely, recent painstaking scientific research has showed that 70% ethanol is the same as 70% ethanol.
What is the alcohol content of 70-proof vodka?
Proof is always double the actual alcohol content of a given product. A seventy proof vodka would contain 35% of pure (100%) ethanol.
What is 190 percent of 70?
In math "of" means multiple, So 70% of 190 is really .70*190 which equals 133. Hope that helped :)
What is 190 multiply by 70?
13300
Why use the 70 percent ethanol?
to save the ethanol
How do you dilute from ethanol 96 percent to 70 percent?
There's a dilutionfactor of 70/96=0.729, when you make 1 liter, you have to use 729 milliliters of ethanol, then you to add water till 1 liter total.
What is 30 percent off 190?
133 .70 * 190
What is 70-120?
190
Why is 70 percent ethanol used in rna extraction?
The density of 70% ethanol allows RNA settlement or say sedimentation in the vial.
Why 70 percent ethanol is used for sterilization instead of 100 percent?
70% ethanol has been shown to have the highest killing ability of microbes. Also, 100% ethanol is toxic to the user
What is 70 over 190 as a percentage?
It is: 70/190 times 100/1 = 36.842% rounded to 3 decimal places
What is 120 plus 70?
190
