Consider the following reaction: Cl2 + Na2S → 2NaCl + S
The percent yield of sulfur when 71.0 g of Cl2 is
reacted in excess Na2S solution is 73.0 %.
What is the actual mass of sulfur yielded by this
reaction?
(Molar mass of S = 32.1 g/mol, molar mass of Cl2 = 71.0
g/mol)

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .