Which of the following compounds is an alkyne?
propyne
2-hydroxypropanol
2,3-butene
ethane

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

Does the energy in a solid increase or decrease when changing to a liquid?

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains