(1)At 298 K and 100 kPa, the oxygen gas produced in this decomposition occupied a volume of 1.22 × 10‐⁴m³. State the ideal gas equation and use it to calculate the number of moles of oxygen produced in this decomposition. (The gas constant R = 8.31 J K-¹ mol¯¹) (a)Ideal gas equation (b)Moles of oxygen​