Suppose you burned 1.726 g of benzoic acid, C6H5 CO2H, in a constant volume calorimeter and found that the temperature increased from 22.73 °C to 34.79 °C. The calorimeter contained 673 g of water, and the bomb had a heat capacity of 805 J/K. Calculate AU per mole of benzoic acid. Specific heat of water is 4.184 J/g. K. Benzoic acid, C6H5 CO2 H, occurs naturally in many berries. Its heat of combustion is well known, so it is used as a standard to calibrate calorimeters. AU = || kJ/mol C6H5 CO₂H

5. A 1.500-g sample of a hydrocarbon is placed in a bomb calorimeter and undergoes combustion. The temperature of the calorimeter rises from 20.00°C to 23.55°C. If the calorimeter has a heat capacity of 40.3 J/°C, what is the heat of combustion (qv) for this hydrocarbon in kJ/g? 6. The heat of sublimation for iodine is 62.4 kJ/mol, at 25°C and 1.00 atm. What is AE for the sublimation of iodine (shown below) under these conditions? 2 (s) F 2 (g) volsd 7. A bomb calorimeter with heat capacity of 1.500x103 J/°C was used to study combustion of terbium (Tb) in excess oxygen: 4 Tb (s) + 3 O2 (g) →2 Tb2O3 (s) When 1.000-g of terbium was burned, a temperature increase of 3.908°C was observed. What is the AE for the reaction, in kJ/mol of Tb2O3?

Calcium hydroxide is prepared by adding calcium oxide to water: CaO (s) + H2O (l) → Ca(OH)2 (s) Calculate the enthalpy change (ΔH) for this reaction considering the following experiment.  A 10.0 g sample of CaO (s) {MM = 56.08 g/mol} is added to 1.00 liter of water in a calorimeter with a total heat capacity of 4.37 kJ K-1 and the temperature increases by 2.70 K.

66.667 ml of 3.000 M H2SO4 (aq) solution was neutralized by the stoichiometric amount of 4.000 M Al(OH)3 solution in a coffee cup calorimeter. The initial temperature of the solutions was 22.3 ºC and after mixing the temperature raised to 24.7 ºC. If the heat capacity of coffee cup is 1.10 J/g ºC, calculate the DHreaction in J/mol Al2(SO4)3.