Question

A tank contains 80 kg of salt and 1000 L of water. A solution of a concentration 0.04 kg of salt per liter enters a tank at the rate 8 L/min. The solution is mixed and drains from the tank at the same rate. (a) What is the concentration of our solution in the tank initially? concentration = (kg/L)

Answer 1

The initial concentration of the solution in the tank is 0.08 kg/L.

Step-by-step explanation:

To find the initial concentration of the solution in the tank, we need to consider the amount of salt and water in the tank initially and the rate at which the solution enters and leaves the tank. Initially, the tank contains 80 kg of salt and 1000 L of water, so the total volume of the solution is 1000 L. Therefore, the initial concentration of the solution can be calculated as:

Concentration = mass of salt / volume of solution

Concentration = 80 kg / 1000 L = 0.08 kg/L

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