Oxyacetylene torches used for welding reach temperatures near 2000°C. The reaction invol...

Oxyacetylene torches used for welding reach temperatures near 2000°C. The reaction involved in the combustion of acetylene is

(a) Starting with 175 g of both acetylene and oxygen, what is the theoretical yield, in grams, of carbon dioxide?

(b) If 68.5 L (d = 1.85 g/L) of carbon dioxide is produced, what is the percent yield at the same conditions of temperature and pressure?

(c) How much of the reactant in excess is unused? (Assume 100% yield.)