Answer Happy

Lab Data Verify your calculation Did you report your data to the correct number of significant figures? Freezing-point depression constant ("C/m) Freezing-point of DI water (°C) Magnesium chloride Molar mass (g/mol) Mass of calorimeter (g) Volume of DI water (ml) Mass of magnesium chloride (g) Moles of magnesium chloride (mol) Mass of calorimeter + solution (g) Mass of calorimeter + solution + ice (g) Freezing-point of solution (°C) Mass of calorimeter + ice after decanting (g) Mass of ice added (g) Mass of ice remaining after decanting (g) Mass of melted ice (g) Mass of water in final solution (g) Mass of water in final solution (kg) Molality of solution (m) Freezing-point depression (C) van't Hoff factor Solution 1 MgCl 95.21 17.28 49.0 1.46 0.0153 67.51 113.17 -1.42 43.92 45.66 26.64 19.02 67.79 0.06779 0.226 0.164 How to calculate van't Hoff factor Solution 2 MgCl, 95.21 17.46 51.0 2.11 0.0222 70.49 115.77 -1.86 41.32 45.28 23.86 21.42 72.34 1.86 -0.20 0.07234 0.307 0.571 Solution 3 MgCl2 95.21 17,41 49.5 2.98 0.0313 69.97 116.74 -2.31 33.65 46.77 16.24 30.53 80.11 0.08011 0.391 0.24