Posted by **Jon** on Friday, December 11, 2009 at 10:05pm.

These review questions are stumping me.

How much water must be added to 50 ML of a 35% acid solution to produce a mixture that is 20% acid.

Could it be as simple as 15% water?

- Math -
**bobpursley**, Friday, December 11, 2009 at 10:13pm
how much acid initially?

.35*50ml= 17.5ml

How much water?

.65*60=32.5ml

.20(32.5+X)=17.5

solve for X

- Math One more thing -
**Jon**, Friday, December 11, 2009 at 10:22pm
I got the answer to be 55 ml, but can you please explain how you knew to do that?

## Answer this Question

## Related Questions

- Math - Alg - How much water must be added to an 80% acid solution to make a ...
- Algebra - how much pure acid must be added to 15 ounces of an acid solution ...
- Algebra 2 - How much pure acid must be added to 6 milliliters of a 5% acid ...
- Algebra 1 - Bunson Burner has 3 liters of a 10% acid solution. How much of pure ...
- Algebra - Suppose a 2% acid solution is mixed with a 3% acid solution. Find the ...
- Algebra - Suppose a 2% acid solution is mixed with a 3% acid solution. Find the ...
- algebra - What quantity of pure acid must be added to 600 mL of a 45% acid ...
- Math - Alg - How much pure acid must be added to a 30% acid solution to make a ...
- Math - Alg - How much pure acid must be added to a 30% acid solution to make a ...
- Math - A chemist needs to mix an 18% acid solution with a 45% acid solution to ...