1.541 ± 0.001 g of hydrated oxalic acid crystals were dissolved in distilled water. The solution was placed in a 250.0 ± 0.5 cm3 volumetric flask and the total volume made up to the mark with distilled water. After thoroughly mixing the contents, 25.00 ± 0.04 cm3 of this solution was pipetted into a conical flask. This required 24.90 ± 0.08 cm3 of 0.100 ± 0.001 mol dm3 sodium hydroxide solution to be neutralised completely.The equation for the reaction is:(COOH)2(aq) + 2NaOH(aq) ↓ (COONa)2(aq) + 2H2O(l)(a) Calculatethepercentageuncertaintyassociatedwith:(i) the mass of the oxalic acid.(ii) the solution in the volumetric flask.(iii) the volume in the pipette.(iv) the molarity of the sodium hydroxide solution.(v) the volume of sodium hydroxide solution used.(b) Calculatethetotalpercentageuncertaintyforthisexperiment.(c) Calculate the molar mass of the oxalic acid obtained from these experimental results to thecorrect number of significant figures and state the uncertainty.(d) Thecorrectliteraturevalueforthemolarmassoftheacidis126.06gmol-1.Calculatethepercentage error.(e) State any other assumptions which may have affected the accuracy of the result.

The candidate’s philosophy of teaching places the student development and learning at the center of the philosophy of teaching.The writing portrays a cohesive and comprehensive understanding of the purpose of education and the role of theory in influencing the teacher’s work. Multiple classroom-specific examples are provided.The work demonstrates a thorough understanding of learning theories, including theories which the candidate has researched independently.The work cites three or more high-quality outside sources.The work contains no spelling or grammatical errors. The work is written at a graduate level or post-graduate level. The writing is well-organized and clear.