50cm^3 of carbon was reacted with 15cm^3 of oxygen at 100°c and 760mmhg to produce carbon (iv) oxide what percentage of the total volume of gas left after the reaction is carbon(ii) oxide (a)20 (b)40(c) 60

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?