Hi, if anyone could answer these for me, it would really help alot. This is science but Chemistry is the closest to that.​

Find the number of moles of argon in 364g of argon.

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?

Who discovered a pattern to the elements in 1869?