The student clearly stated the independent variable as the temperature of the saturated MgCO3 solution and the dependent variable as the volume of HCl needed to neutralize CO32- ions. While the research question did not explicitly mention the analytical method used to determine the solubility product, the student provided a thorough background on the relevant theory and explained the choice of techniques for measuring the variables. The methodology was well documented, with detailed procedural steps and no irrelevant information, enabling reproducibility. Additionally, the student effectively addressed controlled variables, safety, ethical, and environmental considerations associated with the investigation.
