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

The modern periodic table has groups.

When the following equation is balanced using the smallest possible integers, what is the coefficent of oxygen gas? c7h16o(g) + o2(g) → co2(g) + h2o(g) -1 -5 -8 -16 -21

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.