How did you know that vinegar diffused into the cubes? (remember, as vinegar diffuses into the agar, the agar becomes more acidic. this diffusion causes the phenolphthalein indicator to change from pink to colorless.) did the diffusion distance differ between the cubes?

Ithink for the given question above, there are some key points or information that are missing. however, here is what i stumbled upon my research.

vinegar diffused faster through the small cube since after 14 minutes, the small cube was able to completely changed from pink to clear while others were unable to do so due to their large surface area and area. so, the smaller surface area,the faster the rate of diffusion. i hope this . 

answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.

    5.5 n======    assuming that      we have      m = 0.145 kg    a = 38 m/s²therefore    5.51 n, but two significant figures.final answer: 5.5 n