How hot thermodynamics is?

1. Determine whether the heat evolved at constant pressure is >,< or is equal to the heat evovled at constant volume in the reaction below. Explain Your Choice.
O2(g) + 2 C3O2(g) ===> 6 CO(g)

2. Determine whether the heat evolved at constant pressure is >,< or is equal to the heat evovled at constant volume in the reaction below. Explain Your Choice.
CH4(g) + 2 O2(g) ===> CO2(g) + 2 h20(g)

3. The reaction responsible for the defensive explosive discharge of the bombardier beetle is C6H4(0H)2(aq) + 2 H2O2(aq) ===> C6H4O2(aq) + 2 H2O(l)
Calculate enthalpy change in kJ/mole for the reactio from the ff.
C6H4(0H)2(aq) ===> C6H4O2(aq) + H2(g) ΔE=-0.177 kJ/mole
O2(g) + 2 H2O(l) ===> 2 H2O2(aq) ΔE=+0.044kJ/mole
H2O(l) ===> 1/2 O2(g) + H2(g) 1. Determine whether the heat evolved at constant pressure is >,< or is equal to the heat evovled at constant volume in the reaction below. Explain Your Choice.
O2(g) + 2 C3O2(g) ===> 6 CO(g)

2. Determine whether the heat evolved at constant pressure is >,< or is equal to the heat evovled at constant volume in the reaction below. Explain Your Choice.
CH4(g) + 2 O2(g) ===> CO2(g) + 2 h20(g)

3. The reaction responsible for the defensive explosive discharge of the bombardier beetle is C6H4(0H)2(aq) + 2 H2O2(aq) ===> C6H4O2(aq) + 2 H2O(l)
Calculate enthalpy change in kJ/mole for the reactio from the ff.
C6H4(0H)2(aq) ===> C6H4O2(aq) + H2(g) ΔE=-0.177 kJ/mole
O2(g) + 2 H2O(l) ===> 2 H2O2(aq) ΔE=+0.044kJ/mole
H2O(l) ===> 1/2 O2(g) + h2(g) ΔE=+0.286kJ/mole