If you add 1.0 ml of a colored solution (Stock) to 4.0 ml of water in a test tube, what is the dilution ratio, of the colored solution to the final volume?

The dilution ratio is calculated by dividing the volume of the solute (the substance being diluted) by the total volume of the solution.

Step 1: Identify the volume of the solute. In this case, the colored solution is the solute and its volume is 1.0 ml.

Step 2: Identify the total volume of the solution. This is the volume of the solute plus the volume of the solvent (the substance the solute is being added to). In this case, the solvent is water and its volume is 4.0 ml. So, the total volume of the solution is 1.0 ml (colored solution) + 4.0 ml (water) = 5.0 ml.

Step 3: Divide the volume of the solute by the total volume of the solution to find the dilution ratio. So, the dilution ratio is 1.0 ml / 5.0 ml = 0.2.

Therefore, the dilution ratio of the colored solution to the final volume is 0.2.