Question

A 50.63 gram sample of cobalt is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 71.25 g. Determine the empirical formula of the metal oxide Enter the elements in the order Co, O empirical formular

Answer 1

Cobalt + Oxygen Metal oxide 50.63g 71.25g % of Cobalt in metal oxide - mess of cobalt x 100 mess of oxide . 50.63 x 100 71025 = 71.06% % of oxygen in metal oxide = 100-1 of cobalt in metal oxide =(160 - 71.09) 7. 2 28.94% at Symbol % atomic ml Mass molarsato simplest moler Ratio whole no. notar Ratio 11.06 1-20 - 2XL Cobalt Co 71006 =1120 59 59 Oryggen o 28.94 16 20.94 = 1.80 1.60 15 x 2 3 11 Emporical formule of metal oxide = Coo