Final answer:
Jin can use the dilution equation C1V1 = C2V2 to calculate the volume of water needed to dilute the 10 ounces of cleaning fluid to a 20% solution, subtracting the initial volume of cleaning fluid from the final total volume.
Step-by-step explanation:
Jin, a veterinary tech, needs to prepare a 20% solution of cleaning fluid to disinfect examination tables. Assuming that she already has 10 ounces of a concentrated cleaning fluid, we need to find out how much water she should add to achieve the desired concentration. To calculate this, we can use the equation for dilution which is C1V1 = C2V2, where C1 is the initial concentration (assumed to be 100% if pure cleaning fluid), V1 is the initial volume of the cleaning fluid, C2 is the final concentration desired (20% in this case), and V2 is the final volume of the solution.
Setting up the equation with the known values gives us 1.00 (100%) × 10 ounces = 0.20 (20%) × V2. Solving for V2 gives us the total volume of the diluted solution. To find out how much water to add, we subtract the initial 10 ounces of cleaning fluid from the total volume V2.