Answer:
To be sure of the value you will obtain
Explanation:
Trial 1
Mass of calorimeter: 409g
Temp of calorimeter: 20Cº
Mass of calorimeter + water: 457g
Temp of calorimeter + water: 20Cº
Mass of calorimeter + water + ice: 510g
Temp of calorimeter + water + ice: –
Mass of calorimeter + ice: 450g
Temp of calorimeter + ice: 0Cº
Trial 2
Mass of calorimeter: 409g
Temp of calorimeter: 20Cº
Mass of calorimeter + water: 461g
Temp of calorimeter + water: 22Cº
Mass of calorimeter + water + ice: 515g
Temp of calorimeter + water + ice: –
Mass of calorimeter + ice: 447g
Temp of calorimeter + ice: 0Cº
Trial 3
Mass of calorimeter: 409g
Temp of calorimeter: 20Cº
Mass of calorimeter + water: 459g
Temp of calorimeter + water: 22Cº
Mass of calorimeter + water + ice: 513g
Temp of calorimeter + water + ice: –
Mass of calorimeter + ice: 448g
Temp of calorimeter + ice: 0Cº