part a: the student decides to repeat the investigation and collect new data. which change to the procedure will improve the quality of the data the student collects? group of answer choices change only the mass of the cold water in all the mixtures change both liquids to have the same mass and temperature in all the mixtures change the mass of cold water to be larger than the mass of hot water in all the mixtures change the temperature of cold water to be lower than the temperature of hot water in all the mixtures
