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, 16% 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. lp gas burns according to the following exothermic reaction: c3h8(g)+5o2(g)→3co2(g)+4h2o(g)δh∘rx n=−2044kj