Calculate the standard enthalpy change for the reaction at 25 ∘c. standard enthalpy of formation values can be found in this list of thermodynamic properties.
c3h8(g)+5o2(g)⟶3co2(g)+4h2o(g)

Type the letter that represents the correct location for each particle type below.

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

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.