How much heat is required to boil 25.0 grams of water at its boiling point?

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

Kp is the equilibrium constant for dissociation of the propionic acid dimer. what is the sign of the slope for a plot of the natural logarithm of kp vs. inverse temperature for this reaction?