A 0. 8612-g sample of a mixture consisting of nabr, nai, and nano3 was analyzed by adding agno3 to precipitate the br1- and i1-, yielding a 1. 0186-g mixture of agbr and agi. The precipitate was then heated in a stream of cl2, converting it to 0. 7125 g of agcl. Calculate the %w/w nano3 in the sample.