what is [po 4 3− ]/[a] (%) where [h 2 po 4 − ]/[a] (%) is 94.5?
CREATE TABLE "aqueous_solution" (
  "a_mol_l" text,
  "p_h" text,
  "h_3_po_4_a_pct" text,
  "h_2_po_4_a_pct" text,
  "hpo_4_2_a_pct" text,
  "po_4_3_a_pct" text
);
SELECT "po_4_3_a_pct" FROM "aqueous_solution" WHERE "h_2_po_4_a_pct"='94.5';