If you have two substances with the same volume, but different masses,
which one is more dense?

How many atoms are in 2 moles of phosphorus?

How many grams are in one mole of lead?

Two liquids are poured into a beaker. after a few seconds, the beaker becomes warm. which of the following best describes this reaction? a. an exothermic reaction b. a decomposition reaction c. an endothermic reaction d. a single-displacement reaction