The student clearly described how the data was obtained and processed, making each procedural step easy to understand. The description of data recording and processing was detailed and precise, with all tables, graphs, and figures appropriately annotated and using the correct units and significant figures. However, the student needed to expand on the impact of uncertainties on the data and results, particularly how measurement uncertainties would influence the overall conclusions. Despite this, nothing in the work undermines the validity of the conclusions, as the student demonstrated a strong understanding of electrolysis and performed relevant data processing that accurately addressed the research question.