SOLUTION: How many milliliters of 40% ethyl alcohol can be prepared from 135 milliliters of 95% ethyl alcohol? Round to the nearest hundredth.
A 40% ethyl alcohol solution is used to
Algebra.Com
Question 844202: How many milliliters of 40% ethyl alcohol can be prepared from 135 milliliters of 95% ethyl alcohol? Round to the nearest hundredth.
A 40% ethyl alcohol solution is used to make 250 mL of a 10% ethyl alcohol solution. Put units on your answers with no spaces.
-Determine the amount of 40% ethyl alcohol to be used.
-Determine the amount of distilled water to be used to bring the volume to 250mL.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
The first question, making the 40% alcohol from the given 95% alcohol:
Let v = Amount of water to use.
Start with 135 ml. of 95% alcohol.
The second question, making 10% alcohol from the given 40%; a little different because 40% alcohol is being used and diluted with water. The final concentration wanted is 10%, resulting in 250 ml of this 10%.
Realize that water is 0% alcohol.
Let w = Amount of water to use.
Let v = Amount of 40% to use.
AND
Find more thorough information on these mixture problems in the lessons.
-
http://www.algebra.com/tutors/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev
-
http://www.algebra.com/tutors/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev
RELATED QUESTIONS
How many milliliters of a 60% ethyl alcohol should be mixed with water to make 1 L of 15% (answered by robertb)
You are to prepare 1500 milliliters of an alcohol solution containing 0.3 ethyl alcohol... (answered by josmiceli)
A 40 liter of 30% ethyl alcohol needs to be reduced to a concentration of 25% ethy... (answered by ewatrrr)
Mr. Key has 50 liters of a 70% ethyl alcohol solution. How many liters of pure ethyl... (answered by Earlsdon)
A laboratory technician prepares 200 mL of 35% ethyl alcohol from a 95% ethyl alcohol... (answered by josmiceli)
How many milliliters of 70% alcohol can be made from 500 ml of 91% alcohol?
How much... (answered by stanbon)
what is the weight, in grams, of ethyl alcohol that exactly fills a 200.0 mL container.... (answered by jojo14344)
a chemical storeroom has an 80% alcohol solution and a 40% alcohol solution. How many... (answered by Alan3354)
How many milliliters of a 29% alcohol solution must be added to 5 milliliters of a 5%... (answered by checkley77)