
Answer:
Â
Explanation:
the reaction of ammonium perchlorate is as follows .
2 NHâ‚„ClOâ‚„ = Nâ‚‚ + Clâ‚‚ +2Oâ‚‚ + 4Hâ‚‚O.
 235 g                    72 g
 235g ammonium perchlorate gives 72g water
5.9 g ammonium perchlorate gives ( 72/235) x 5.9 = 1.807 g