Acetylene (ethyne) gas reacts with oxygen and burns at 3300 ?C in an acetylene torch.

Part A) Write the balanced equation for the complete combustion of acetylene. Express your answer as a chemical equation. Identify all of the phases in your answer.

Part B)How many grams of oxygen are needed to react with 8.5 L of acetylene gas at STP? Express your answer to two significant figures and include the appropriate units.

Part C) How many liters of CO2 gas at STP are produced when 33.0 g of acetylene undergoes combustion? Express your answer to three significant figures and include the appropriate units.