Equal volumes of gaseous, liquid, and solid ethanol do not contain the same number of molecules. Neither do equal volumes of solid water and solid sugar contain the same number of molecules. However, equal volumes of gaseous water and gaseous ethanol have the same number of molecules at the same temperature and pressure. What is different about the gaseous phase of substances that makes Avogadro’s law correct only for gases?

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.