Place the mixture in hot water and stir well. <span>The KNO3 is very soluble in hot water. </span> <span>Use a fine filter paper and filter off the sand. </span> <span>The sand will be separated from the KNO3 solution. </span> <span>The water can now be evaporated from the solution by further, gentle heating leaving the solid in the container.</span>
Given, 0.29 g of hydrocarbon produces 448ml of CO2 at STP. then, C2H5 is the emperical formula of hydrocarbon . n = 2 , hence, molecular formula will be C4H10
