The student clearly stated the independent variable, which was the concentration of C2H5OH(aq), and the dependent variable, the molar enthalpy of combustion, in the research question. However, the student did not describe the method of analysis used to measure the dependent variable, which should have been included for clarity. The background theory was well-developed, directly relating to the research question, and the choice of measurement techniques was explained clearly. The methodology was detailed and allowed for reproducibility; however, the student failed to fully address the safety and environmental issues associated with the investigation. Overall, the student demonstrated a solid understanding of the research context and methodology, but needed to further enhance the consideration of safety and environmental aspects.
