Abrine solution of salt flows at a constant rate of 4l/min into a large tank that initially held 100l of pure water. the solution inside the tank is kept well-stirred and flows out of the tank at a rate of 3l/min. if the concentration of salt in the brine entering the tank is 0.2kg/l, determine the mass of the salt in the tank after t minutes. when will the concentration of salt in the tank reach 01.kg/l?

To reach 01.kg/L concentration of salt in the tank will take around 18.9 min

Explanation:

Attached

a) The mass of the salt in the tank after t minutes is:

b) In 484.8 min the concentration of salt in the tank reach 0.1 kg/L

Explanation:

please look at the solution in the attached Word document

93.2 ml + 3920 ml = 4013 ml total  

(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m

the volume in in l of the diluted solution would be 0.0471 m.

passing a magnet thought the

mixture , because iron gets attracted to magnet .