LP gas burns according to the following exothermic reaction:
C3H8 (g) + 5O2(g) → 3CO2(g) +4H2O(g)
ΔHorxn= -2044 kJ
Explain what mass of LP gas is necessary to heat 1.4 L of water from room temperature (25.0 oC) to boiling (100.0oC)? Suppose that during the heating, 15% of the heat emitted by the LP gas combustion goes to heat the water when the rest is lost as heat to the surroundings.