Question

Type the correct answer in the box.

What is the residence time for the average water molecule in the water tank?
A factory uses a water tank to cool one of its pieces of machinery. To keep the water cold, fresh water enters the tank at a rate of 4 kilograms per second. Water also flows out of the tank at the same rate. The tank holds 8,000 kilograms of water.

The residence time for the average water molecule in that water tank is________
seconds.

Answer 1

A factory uses a water tank to cool one of its pieces of machinery. To keep the water cold, fresh water enters the tank at a rate of 4 kilograms per second. Water also flows out of the tank at the same rate. The tank holds 8,000 kilograms of water.

The residence time for the average water molecule in that water tank is

2000

seconds.

Step-by-step explanation:

2000 is correct

Answer 2

2,000

Step-by-step explanation:

4 kilograms will go in the tank in 1 second. So for 8,000 kilograms of water you divide 8,000 by 4. Which gives you 2,000. Got it right on Plato as well.