I need help calculating the concentrations of oxalate and KMnO4 solutions based on titration data. Please provide the necessary experimental results.

I understand you've sent the original image again. However, the image still does not contain the experimental data needed to perform the calculations for questions 1, 2, and 3.

To solve these problems, I need the following information, which is typically found in a table of results or a preceding part of the experiment:

• For question 1 (Concentration of Oxalate solution):

  • The mass of $\text{Na}_2\text{C}_2\text{O}_4$ (oxalate) weighed out.
  • The volume of the volumetric flask in which the oxalate solution was prepared (e.g., $250 \text{ cm}^3$).

• For questions 2 and 3 (Concentration of $\text{KMnO}_4$ solution):

  • The volume of the oxalate solution pipetted for each titration (e.g., $25.0 \text{ cm}^3$).
  • The titre volume(s) of $\text{KMnO}_4$ solution used in the titration(s).
  • The balanced chemical equation for the reaction between oxalate ions ($\text{C}_2\text{O}_4^{2-}$) and permanganate ions ($\text{MnO}_4^-$) to determine the mole ratio.

Without this experimental data, I cannot calculate the concentrations. Please provide the missing details.