We have 5% and 6.5% acetic acid solutions and we need 200 ml of 6% acetic acid.
Set up two equations:
f means 5% and s means 6.5%
A) f + s = 200
B) .05f + .065s = (.06 * 200)
Multiplying equation A by -.05
A) -.05f -.05s = -10
B) .05f + .065s = 12 then adding both equations:
.015s = 2
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we need 133.33</span> ml of 6.5% acetic acid and
66.67 ml of 5% acetic acid solution.
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Source:
http://www.1728.org/mixture.htm
Answer: 2.04
Step-by-step explanation:
2+2=4
4/50 = 2.04
16÷4=4 12÷4=8 8÷4= 4
16-4=12 12-4=8 8-4=4
Answer is b
As powers add when base is same
-8/9÷1/6
To divide by a fraction, multiply by its reciprocal.
- 8/9*6
Cancel common factor of 3
- 1×8/3=2/1
-8/3=2/1
Simplify to get
- 16/3
