A salt mixture was believed to contain kclo3, khco3, k2co3 and kcl. When this mixture was heated 18 g of water, 132 g of co2 and 40 g of oxygen is evolved according to the following reaction. 2kclo3 → 2kcl + 3o2 2khco3 → k2o + h2o + 2co2 k2co3 → k2o + co2 then the ratio of mass % of kclo3 to khco3 is.