Question

Liquefied petroleum (LP) gas burns according to the following exothermic reaction:

C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)ΔH∘rxn=−2044kJ

What mass of LP gas is necessary to heat 1.3 L of water from room temperature (25.0 ∘C ) to boiling (100.0 ∘C )? Assume that, during heating, 15% of the heat emitted by the LP gas combustion goes to heat the water. The rest is lost as heat to the surroundings.
Express your answer using two significant figures.

Answer 1

вау, это кажется сложным, но я все равно не знаю