Final answer:
To find the new ratio strength of a povidone iodine solution that has been diluted from 100 milliliters of a 1:50 solution to 1 liter, we determine that the new ratio is 1:500, since the volume is increased tenfold.
Step-by-step explanation:
The question is about calculating the ratio strength of a diluted povidone iodine solution. Starting with a 1:50 solution, 100 milliliters is diluted to a total volume of 1 liter. Recognizing that 1 liter is equivalent to 1000 milliliters, we can calculate the new ratio strength.
Since the solution's volume has been increased by a factor of ten (from 100ml to 1000ml), the concentration is consequently diluted by the same factor. Therefore, the new ratio strength of the diluted solution would be 1:500. This takes into account the principles of dilution, where if you increase the volume by a certain factor, the concentration decreases by the same factor.