SOLUTION: In yoir chemistry class you need a 3% boric acid solution. How many milimeters of 5% acid solution should be added to 40 milimeters of 2% boric acid solution to obtain the desired

Question 886466: In yoir chemistry class you need a 3% boric acid solution. How many milimeters of 5% acid solution should be added to 40 milimeters of 2% boric acid solution to obtain the desired solution? Give the equation(s) you used to solve the problem and withe the answer
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
You may need to know the density of the 5% solution to do this right, and maybe need to know how the percent concentrations are expressed regarding mass/vol or mass/mass.

An estimation can be made using these as a system:

and

u = volume of 2%
v = volume of 5%
RELATED QUESTIONS
how many milimeters of a 15% acid solution and how many milimeters of 3% acid solution... (answered by mananth)

How much water should be added to 800 cc of a 70% solution of boric acid to make it a 40% (answered by nerdybill)

A nurse has 6 L of a 3% boric acid solution. How much of a 10% boric acid solution must... (answered by josgarithmetic)

If you want to make 60mls of a 5% boric acid in alcohol solution how much boric acid... (answered by Alan3354)

how many gallons of pure (100%) acid should be added to 5 gallons of a 40% acid solution... (answered by scott8148,Earlsdon)

How much 1% boric acid solution and 6% boric acid solution have to be mixed to obtain 30... (answered by josgarithmetic)

Hi math enthusiasts, I have been trying to work this linear system word problem and just (answered by AnlytcPhil,Fombitz)

How much 1% boric acid solution and 5% boric acid solution are needed to make 30 mL of (answered by mananth)

A pharmacist has 6 liters of an 8% boric acid solution. How much water should he add to... (answered by Edwin McCravy,josmiceli)