Posted by **Barry** on Thursday, January 31, 2013 at 9:07pm.

A pot contains 6 liters of brine at a concentration of 120g/l. How many liters of the water should be boiled off so that concentration of the brine is 200g/l.

- Math -
**Jessica**, Thursday, January 31, 2013 at 9:08pm
divide 200 by 120 to get your answer

- Math -
**Reiny**, Thursday, January 31, 2013 at 9:48pm
let the amount boiled off be x L

amount of brine = 6 (120 g/L) = 720 g

that must stay constant

(6-x)(200 g/L) = 720 g

1200 - 200x = 720

-200x = -480

x = 2.4

2.4 L must be boiled off

check:

liquid left = 6-2.4 = 3.6 L

but there must still be 720 g in there

concentration = 720/3.6 = 200 g/L

## Answer this Question

## Related Questions

- REGENTS(PRACTICE) - A scientist wants to determine the best conditions for ...
- science - A reversed osmosis plant desalinates 5×106 L/day of feedwater ...
- Chemistry - A certain brine has 3.96% NaCl by mass. A 75.0−mL sample ...
- Chemistry - If I add 0.348 liters of 5.25% bleach(Sodium Hypochlorite) into 4 ...
- Chemistry - If I add 0.348 liters of 5.25% bleach(Sodium Hypochlorite) into 4 ...
- Math - The radiator of a car contains 20 liters of water. Five liters are ...
- chemistry - Calculate the concentration, in percent by mass, of a refrigerant ...
- chemistry - The concentration is 1.67M. I have 5.28 grams of ethanol. How many ...
- Chemistry - Calculate the volume occupied by 200g of steam at 200 °C and 0.5 atm...
- Chem still confused - 1.) A biochemistry student wants to make 4 liters of a ...