Agas in a piston at standard pressure. The volume of the piston starts at 620 mL. If the piston is contracted down to 442 mL, what is the new pressure in mmHg?

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