SOLUTION: You need a 55% alcohol solution. On hand, you have a 770 mL of a 95% alcohol mixture. How much pure water will you need to add to obtain the desired solution?
A) Write an equati
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A) Write an equati
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Question 766283: You need a 55% alcohol solution. On hand, you have a 770 mL of a 95% alcohol mixture. How much pure water will you need to add to obtain the desired solution?
A) Write an equation using the information as it is given above that can be used to solve this problem. Use x as your variable to represent the amount of pure water you need to use.
B) You will need HOW MANY mL of pure water to obtain HOW MANY mL of the desired 55% solution?? Answer by solver91311(24713) (Show Source):
The number of mL of pure alcohol you have in 770 mL of a 95% solution is . If you add mL of pure water, you have mL of solution of which is pure alcohol. Since you added pure water, the amount of pure alcohol is the same, so:
Solve for to get the amount of water to add, and then calculate to find the total amount of solution.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
