StoichiometryGas Volume and Mass Stoichiometry1Choose the best answerIn the reaction: 2NO + O₂ → 2NO₂ 560 cm³ NO₂ is produced at STP (273 K and 1 atm), while 50 mg O₂ remains unused. What were the initial masses of NO and O₂?A0.6 g NO and 0.4 g O₂B0.75 g NO and 0.45 g O₂C6.0 g NO and 4.5 g O₂D0.3 g NO and 0.37 g O₂ Like 0 Discuss 0Share