Answer Happy

Trial 2 0.09 2.19 Trial 1 Mass of magnesium oxide 0.08 (g) Moles of magnesium oxide 1.94 Initial temperature, Ti (°C) 3°C T at 1 minute (°C) 10°C 12°C T at 2 minutes (°C) 12°C 15°C T at 3 minutes (°C) 15°C T at 4 minutes (°C) 20°C T at 5 minutes (°C) 21°C T at 6 minutes (°C) T at 7 minutes (°C) T at 8 minutes (°C) T at 9 minutes (°C) T at 10 minutes (°C) 2°C Trial 3 0.0 2.43 2°C 10°C 15°C 14°C 18°C 110°C 22°C 25°C 27°C 27°C 27°C 27°C 28°C २१०८ २४°८ 20°C 19°C 24°C 22°C 26°C 25°C 27°C 28°C 27°C 29°C 30°C 30°C

example calculations from your Trial 1 data below the Trial 1 Trial 2 Initial temperature, T₁ (°C) 3°C 2°C Final temp (y-int of linear fit). To 9.067 12.4 ΔΤ (°C) Aqsoln (J) Aqc (J) AH₂ (kJ/mol) Average AH2 (kJ/mol) (with stdev!) Trial 3 2°C 9.4 6.067°C 10.4°C 7.4°C 0.494 0.952 0.753