SOLUTION: 5. A chemist has one solution that is 15% acid and another solution that is 25% acid. How much of the 15% solution is needed to make 100 L of a solution that is 18% acid?
a. 45
Algebra.Com
Question 351038: 5. A chemist has one solution that is 15% acid and another solution that is 25% acid. How much of the 15% solution is needed to make 100 L of a solution that is 18% acid?
a. 45 L b. 70 L c. 25 L d. 30 L
Found 2 solutions by Alan3354, stanbon:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A chemist has one solution that is 15% acid and another solution that is 25% acid. How much of the 15% solution is needed to make 100 L of a solution that is 18% acid?
------------
f = amount of 15%
t = amount of 25%
----------
f + t = 100 (total solution)
0.15f + 0.25t = 0.18*100 (total acid)
You can finish it.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A chemist has one solution that is 15% acid and another solution that is 25% acid. How much of the 15% solution is needed to make 100 L of a solution that is 18% acid?
------------------------
Equation:
acid + acid = acid
0.15x + 0.25(100-x) = 0.18*100 L
---------------------------------------------
Multiply thru by 100 to get:
15x + 2500-25x = 1800
---
-10x = -700
x = 70 L (amt of 15% solution needed for the mixture)
---
100-x = 30L (amt of 25% solution needed for the mixture)
====================================
Cheers,
Stan H.
a. 45 L b. 70 L c. 25 L d. 30 L
RELATED QUESTIONS
A Chemist has one solution that is 12% acid and another solution that is 24% acid. How... (answered by Alan3354)
a chemist has a 25% acid solution and a 30% acid solution. how many liters of each... (answered by richwmiller)
A chemist has one solution of acid and water that is 75% acid and another solution that... (answered by Alan3354)
A chemist has one solution that is 80% acid and another solution that is 30% acid. How... (answered by stanbon,richwmiller)
A chemist has one solution that is 80% acid and another solution that is 30% acid. How... (answered by josmiceli)
please help me solve this problem. a chemist has one solution that is 15% acid and... (answered by ewatrrr)
One solution is 14% acid and another is 19% acid. How much of each solution is needed to... (answered by robertb)
A chemist has two acid solutions. One contains 15 percent acid and the other contains 6... (answered by stanbon)
a chemist has one solution that is 80% acid and another that is 30% acid. how much of... (answered by drk)