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?

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?