Consider the gas phase reaction
2NO(g) + O₂(g) → 2NO₂(g)
If 700. ml of NO at STP is reacted with 300. ml of O₂ at STP, what mass of NO₂ (m = 46.01 g/mol) are produced?
A. 0.808 g NO₂
B. 1.23 g NO₂
C. 1.44 g NO₂
D. 2.67 g NO₂