Each agar block was placed in vinegar for 5 minutes. The distance the vinegar diffused can be measured by finding the distance from the outer edge of the block to the pink edge inside the block. Measure the diffusion distance for each block. Then, calculate the diffusion rate by dividing the distance (mm) by the time (min). DISTANCE VINEGAR DIFFUSED DIFFUSION RATE (mm / minute) SMALL CUBE MEDIUM CUBE LARGE CUBE