Moses has a higher ratio of acidic solution to total solution, so Moses's mixture is more acidic than Bao's mixture.
To determine which mixture is more acidic, we can calculate the ratio of acidic solution to total solution for each student.
The higher the ratio, the more acidic the mixture.
Bao's Mixture:
Total solution = Water + Acidic solution = 26 ml + 4 ml = 30 ml
Ratio of acidic solution to total solution = 4 ml / 30 ml ≈ 0.133
Moses's Mixture:
Total solution = Water + Acidic solution = 13 ml + 3 ml = 16 ml
Ratio of acidic solution to total solution = 3 ml / 16 ml ≈ 0.188
Comparing the ratios, we can see that Moses has a higher ratio of acidic solution to total solution, so Moses's mixture is more acidic than Bao's mixture.