Trial #1

30.0 mL of water

initial temp of water was 24C

mass of NH4NO3 was 5.0g

lowest temp of water reached 14C

Trial #2

30 mL of water

initial temp of water was 23C

mass of NH4NO3 was 5.0g

lowest temp of water reached was 13C

11. Find the average energy change in kJ/ mole of the trials