Which starting condition would produce the larger volume of carbon dioxide by combustion of C₂H₄ (g) with an excess of oxygen gas to produce carbon dioxide and water:

(a) 1.00 L of C₂H₄(g);

(b) 1.20 g of C₂H₄(g)? Justify your answer. The system is maintained at a temperature of 45 °C and 2.00 atm.