6.) Ammonium ions can be analyzed by precipitating with H2PtCl6 as(NH4)2PtCl6 and then igniting the precipitate to platinum metal, which is weighed [(NH4)2PtCl6 heat −−−→ Pt 2NH4Cl(g) 2Cl2(g)]. Calculate the percent ammonia in a 1.00-g sample that yields 0.100 g Pt by this method.